Real-time delivery of interactions in online social networking system

1. A method comprising:

sending, for display on client devices of users of a social networking system, a content item amongst a plurality of content items associated with the users;

receiving, from a client device of a first user of the social networking system, information indicating that the first user is currently viewing the content item;

responsive to receiving the information:

identifying one or more other users connected to the first user within the social networking system, each of the one or more other users performing a user interaction with the content item while the first user is currently viewing the content item;

selecting a second user from the one or more other users based on an affinity between the first user and the second user;

determining a type of emotion associated with the user interaction performed by the second user; and

sending for display to the client device a widget identifying the second user and identifying the type of emotion, the one or more widgets configured to move across the content item displayed on the client device while the first user is currently viewing the content item; and

responsive to receiving from the client device a user interaction with the widget by the first user, sending for display to the client device information indicating the second user in a field for receiving comments by the first user.

2. The method of claim 1 , wherein the sending for display to the client device a widget identifying the second user and identifying the type of emotion comprises:

sending for display to the client device one or more of a profile image of the second user, an avatar of the second user, text representing the second user's name, coordinates representing the second user's geolocation, and a screenname of the second user; and

responsive to the sending for display to the client device, sending for display to the client device an icon identifying the type of emotion.

3. The method of claim 1 , wherein the user interaction received from the client device by the first user comprises one or more of:

tapping on the widget;

mousing over the widget; and

hovering over the widget.

4. The method of claim 1 , wherein the selecting the second user comprises:

for each user of the one or more other users, determining a number of past user interactions between the user and the first user; and

identifying a user of the one or more other users having a highest number of past user interactions between the one or more other users and the first user.

5. The method of claim 1 , wherein the selecting the second user comprises:

determining a topic of the content item;

for each user of the one or more other users, determining a number of past user interactions between the user and content items corresponding to the topic; and

identifying a user of the one or more other users having a highest number of past user interactions between the one or more other users and content items corresponding to the topic.

6. The method of claim 1 , wherein the selecting the second user comprises:

for each user of the one or more other users, determining a geolocation distance between a client device of the user and the client device of the first user; and

identifying a user of the one or more other users having a smallest geolocation distance between client devices of the one or more other users and the client device of the first user.

7. A method comprising:

sending, for display on client devices of users of a social networking system, a content item amongst a plurality of content items associated with the users;

receiving, from a client device of a first user of the social networking system, information indicating that the first user is currently viewing the content item;

responsive to receiving the information:

identifying a second user connected to the first user within the social networking system, the second user performing a user interaction with the content item while the first user is currently viewing the content item;

determining a type of emotion associated with the user interaction performed by the second user; and

sending for display to the client device a widget identifying the second user and identifying the type of emotion, the widget configured to move across the content item displayed on the client device while the first user is currently viewing the content item; and

responsive to receiving from the client device a user interaction with the widget by the first user, sending for display to the client device information indicating the second user in a field for receiving comments by the first user.

8. The method of claim 7 , wherein the sending for display to the client device a widget identifying the second user and identifying the type of emotion comprises:

sending for display to the client device one or more of a profile image of the second user, an avatar of the second user, text representing the second user's name, coordinates representing the second user's geolocation, and a screenname of the second user; and

responsive to the sending for display to the client device the information, sending for display to the client device an icon identifying the type of emotion.

9. The method of claim 7 , wherein the user interaction received from the client device by the first user comprises one or more of:

tapping on the widget;

mousing over the widget; and

hovering over the widget.

10. The method of claim 7 , wherein the identifying the second user comprises:

identifying one or more other users connected to the first user within the social networking system, each of the one or more other users performing a user interaction with the content item while the first user is currently viewing the content item;

selecting the second user from the one or more other users based on an affinity between the first user and the second user.

11. The method of claim 10 , wherein the selecting the second user comprises:

for each user of the one or more other users, determining a number of past user interactions between the user and the first user; and

identifying a user of the one or more other users having a highest number of past user interactions between the one or more other users and the first user.

12. The method of claim 10 , wherein the selecting the second user comprises:

determining a topic of the content item;

for each user of the one or more other users, determining a number of past user interactions between the user and content items corresponding to the topic; and

identifying a user of the one or more other users having a highest number of past user interactions between the one or more other users and content items corresponding to the topic.

13. The method of claim 10 , wherein the selecting the second user comprises:

for each user of the one or more other users, determining a geolocation distance between a client device of the user and the client device of the first user; and

identifying a user of the one or more other users having a smallest geolocation distance between client devices of the one or more other users and the client device of the first user.

14. The method of claim 7 , wherein the user interaction performed by the second user comprises the second user clicking on an icon representing the type of emotion associated with the user interaction.

15. The method of claim 7 , wherein the user interaction performed by the second user comprises one or more of:

the second user clicking on an icon representing the type of emotion associated with the user interaction;

the second user sharing the content item by sending it to the client device of the first user;

the second user commenting on the content item;

the second user checking-in to a physical location linked to the content item; and

the second user joining a user group linked to the content item.

16. The method of claim 7 , wherein the determining the type of emotion associated with the user interaction performed by the second user comprises:

receiving, from a client device of the second user, the user interaction performed by the second user; and

determining the type of emotion based on a mapping from user interactions to types of emotions associated with the user interactions.

17. A non-transitory computer-readable storage medium comprising instructions executable by a processor, the instructions comprising:

sending, for display on client devices of users of a social networking system, a content item amongst a plurality of content items associated with the users;

receiving, from a client device of a first user of the social networking system, information indicating that the first user is currently viewing the content item;

responsive to receiving the information:

identifying a second user connected to the first user within the social networking system, the second user performing a user interaction with the content item while the first user is currently viewing the content item;

determining a type of emotion associated with the user interaction performed by the second user; and

sending for display to the client device a widget identifying the second user and identifying the type of emotion, the one or more widgets configured to move across the content item displayed on the client device while the first user is currently viewing the content item; and

responsive to receiving from the client device a user interaction with the widget by the first user, sending for display to the client device information indicating the second user in a field for receiving comments by the first user.

18. The non-transitory computer-readable storage medium of claim 17 , wherein the sending for display to the client device a widget identifying the second user and identifying the type of emotion comprises:

sending for display to the client device one or more of a profile image of the second user, an avatar of the second user, text representing the second user's name, coordinates representing the second user's geolocation, and a screenname of the second user; and

responsive to the sending for display to the client device the information, sending for display to the client device an icon identifying the type of emotion.

19. The non-transitory computer-readable storage medium of claim 17 , wherein the user interaction received from the client device by the first user comprises one or more of:

tapping on the widget;

mousing over the widget; and

hovering over the widget.

20. The non-transitory computer-readable storage medium of claim 17 , wherein the identifying the second user comprises:

identifying one or more other users connected to the first user within the social networking system, each of the one or more other users performing a user interaction with the content item while the first user is currently viewing the content item;

selecting the second user from the one or more other users based on an affinity between the first user and the second user.