Generating a summary of social media content

1. A method comprising:

receiving, by one or more processing devices from a client device of a user, one or more search terms specified by the user;

searching, in a social network, for items of social media content that (i) are posted by one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least a predefined amount of relevance to the one or more search terms;

identifying, based on searching, a plurality of different items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms;

identifying, in the plurality of different items of social media content, one or more terms having at least the predefined amount of relevance to at least one of the one or more search terms;

identifying one or more previously executed search queries that comprise at least one of the one or more terms identified;

re-executing at least one of the one or more previously executed search queries;

identifying, based on re-executing, one or more additional items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms; and

generating, by the one or more processing devices, a summary of (i) content of the plurality of different items of social media content identified based on searching, and (ii) content of the one or more additional items of social media content identified based on re-execution;

wherein the summary provides a description of content in at least a subset of the one or more additional items of social media content and the plurality of different items of social media content that are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and wherein the summary differs from the content in the subset of the plurality of different items of social media content.

2. The method of claim 1 , wherein generating the summary comprises:

identifying one or more terms that are occur with increased frequency in the plurality of different items of social media content identified, relative to a frequency with which other terms occur in the plurality of different items of social media content identified;

wherein the summary comprises at least one of the one or more terms identified.

3. The method of claim 2 , further comprising:

generating information that qualifies the one or more terms identified;

wherein the summary further comprises the information generated.

4. The method of claim 1 , wherein generating the summary comprises:

identifying, in the plurality of different items of social media content identified, an item of social media content authored by an authoritative source;

wherein the summary comprises at least the item of social media content authored by the authoritative source.

5. The method of claim 1 , further comprising:

generating, based on the one or more search terms, a search query;

wherein searching comprises:

searching based on the search query.

6. The method of claim 5 , further comprising:

selecting one or more terms occurring in the plurality of different items of social media content associated with at least the predefined amount of relevance to the one or more search terms; and

expanding the search query to include the one or more terms selected.

7. The method of claim 1 , further comprising:

transmitting, to the client device, the summary for display in a content stream rendered in a graphical user interface.

8. One or more machine-readable hardware storage devices storing instructions that are executable by one or more processing devices to perform operations comprising:

receiving, from a client device of a user, one or more search terms specified by the user;

searching, in a social network, for items of social media content that (i) are posted by one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least a predefined amount of relevance to the one or more search terms;

identifying, based on searching, a plurality of different items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms;

identifying, in the plurality of different items of social media content, one or more terms having at least the predefined amount of relevance to at least one of the one or more search terms;

identifying one or more previously executed search queries that comprise at least one of the one or more terms identified;

re-executing at least one of the one or more previously executed search queries;

identifying, based on re-executing, one or more additional items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms; and

generating a summary of (i) content of the plurality of different items of social media content identified based on searching, and (ii) content of the one or more additional items of social media content identified based on re-execution;

wherein the summary provides a description of content in at least a subset of the one or more additional items of social media content and the plurality of different items of social media content that are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and wherein the summary differs from the content in the subset of the plurality of different items of social media content.

9. The one or more machine-readable hardware storage devices of claim 8 , wherein generating the summary comprises:

identifying one or more terms that are occur with increased frequency in the plurality of different items of social media content identified, relative to a frequency with which other terms occur in the plurality of different items of social media content identified;

wherein the summary comprises at least one of the one or more terms identified.

10. The one or more machine-readable hardware storage devices of claim 9 , wherein the operations further comprise:

generating information that qualifies the one or more terms identified;

wherein the summary further comprises the information generated.

11. The one or more machine-readable hardware storage devices of claim 8 , wherein generating the summary comprises:

identifying, in the plurality of different items of social media content identified, an item of social media content authored by an authoritative source;

wherein the summary comprises at least the item of social media content authored by the authoritative source.

12. The one or more machine-readable hardware storage devices of claim 8 , wherein the operations further comprise:

generating, based on the one or more search terms, a search query;

wherein searching comprises:

searching based on the search query.

13. The one or more machine-readable hardware storage devices of claim 12 , wherein the operations further comprise:

selecting one or more terms occurring in the plurality of different items of social media content associated with at least the predefined amount of relevance to the one or more search terms; and

expanding the search query to include the one or more terms selected.

14. The one or more machine-readable hardware storage devices of claim 8 , wherein the operations further comprise:

transmitting, to the client device, the summary for display in a content stream rendered in a graphical user interface.

15. An electronic system comprising:

one or more processing devices; and

one or more machine-readable hardware storage devices storing instructions that are executable by the one or more processing devices to perform operations comprising:

receiving, from a client device of a user, one or more search terms specified by the user;

searching, in a social network, for items of social media content that (i) are posted by one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least a predefined amount of relevance to the one or more search terms;

identifying, based on searching, a plurality of different items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms;

identifying, in the plurality of different items of social media content, one or more terms having at least the predefined amount of relevance to at least one of the one or more search terms;

identifying one or more previously executed search queries that comprise at least one of the one or more terms identified;

re-executing at least one of the one or more previously executed search queries;

identifying, based on re-executing, one or more additional items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms; and

generating a summary of (i) content of the plurality of different items of social media content identified based on searching, and (ii) content of the one or more additional items of social media content identified based on re-execution;

wherein the summary provides a description of content in at least a subset of the one or more additional items of social media content and the plurality of different items of social media content that are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and wherein the summary differs from the content in the subset of the plurality of different items of social media content.

16. The electronic system of claim 15 , wherein generating the summary comprises:

identifying one or more terms that are occur with increased frequency in the plurality of different items of social media content identified, relative to a frequency with which other terms occur in the plurality of different items of social media content identified;

wherein the summary comprises at least one of the one or more terms identified.

17. The electronic system of claim 16 , wherein the operations further comprise:

generating information that qualifies the one or more terms identified;

wherein the summary further comprises the information generated.

18. The electronic system of claim 15 , wherein generating the summary comprises:

identifying, in the plurality of different items of social media content identified, an item of social media content authored by an authoritative source;

wherein the summary comprises at least the item of social media content authored by the authoritative source.

19. The electronic system of claim 15 , wherein the operations further comprise:

generating, based on the one or more search terms, a search query;

wherein searching comprises:

searching based on the search query.

20. The electronic system of claim 19 , wherein the operations further comprise:

selecting one or more terms occurring in the plurality of different items of social media content associated with at least the predefined amount of relevance to the one or more search terms; and

expanding the search query to include the one or more terms selected.

21. The electronic system of claim 15 , wherein the operations further comprise:

transmitting, to the client device, the summary for display in a content stream rendered in a graphical user interface.

22. An electronic system comprising:

means for receiving, from a client device of a user, one or more search terms specified by the user;

means for searching, in a social network, for items of social media content that (i) are posted by one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least a predefined amount of relevance to the one or more search terms;

means for identifying, based on searching, a plurality of different items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms;

means for identifying, in the plurality of different items of social media content, one or more terms having at least the predefined amount of relevance to at least one of the one or more search terms;

means for identifying one or more previously executed search queries that comprise at least one of the one or more terms identified;

means for re-executing at least one of the one or more previously executed search queries;

means for identifying, based on re-executing, one or more additional items of social media content that (i) are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and (ii) have at least the predefined amount of relevance to the one or more search terms; and

means for generating a summary of (i) content of the plurality of different items of social media content identified based on searching, and (ii) content of the one or more additional items of social media content identified based on re-execution;

wherein the summary provides a description of content in at least a subset of the one or more additional items of social media content and the plurality of different items of social media content that are posted by the one or more other users socially connected in the social network within one degree of separation to the user who specified the one or more search terms, and wherein the summary differs from the content in the subset of the plurality of different items of social media content.