Method and system for distribution of presence information

1. A method for distributing data between a first user and a second user comprising:

detecting communication between the first user and the second user;

creating an entry for the second user in a roster for the first user;

populating the entry for the second user in the roster of the first user with data elements, each data element of the data elements corresponding to a data attribute, said data attribute indicating how the corresponding data element is to be shared; and

utilizing the roster of the first user to distribute data reflecting the first user to the second user.

2. The method of claim 1 , wherein the detecting communication comprises:

receiving a communication from the first user to the second user; and

receiving a notification the second user has opened or referenced the communication.

3. The method of claim 1 , wherein the utilizing checks the attribute of the data element for the second user.

4. The method of claim 1 , wherein the communication is an indirect communication.

5. The method of claim 4 , wherein the indirect communication is a carbon copy of a communication of the second user in a communication to the first user.

6. The method of claim 1 , wherein a data element attribute provides indirection to another data element.

7. The method of claim 1 , wherein the populating utilizes one or more of:

a default mask based on a context or situation;

a mask based on an application that initiated a roster update;

an update mask based on further communication between the first user and the second user;

an overt update mask based on a policy of the first user towards the second user or a plurality of other users; and

an administrative application.

8. A method for distributing data between a first user and a second user comprising:

detecting direct or indirect communication between the first user and the second user;

creating an entry for the second user in a roster for the first user;

populating the entry for the second user in the roster of the first user with data elements and attributes of the data elements, said data elements and attributes of the data elements indicating what data can be shared with the second user and how the data is to be shared; and

utilizing the roster of the first user to distribute data reflecting the first user to the second user, wherein the utilizing checks the attribute of the data element for the second user, and, wherein the attribute is a data word corresponding with a mask.

9. The method of claim 8 , wherein the mask specifies attributes for at least one of notification options, privacy options, data type options and subscription options.

10. A data processing system providing a data service within a network for distributing data, the data processing system comprising:

a computer with memory;

a presence server executing in the memory of the computer and providing the data service, the data service configured to:

detect communication between a first user and a second user;

create an entry for the second user in a roster of the first user;

populate the entry for the second user in the roster of the first user with data elements, each data element of the data elements corresponding to a data attribute, said data attribute indicating how the corresponding data element is to be shared; and

utilize the roster of the first user to distribute data reflecting the first user to the second user.

11. The data service of claim 10 , wherein the data service is one of a presence service, a location service and a content delivery service.

12. The data service of claim 10 , wherein the data service, when detecting communication, is configured to:

receive a communication from the first user to the second user; and

receive a notification the second user has opened the communication.

13. The data service of claim 12 , wherein the roster is a matrix comprising users a given data service client has communicated with versus data elements and attributes.

14. The data service of claim 10 , wherein the communication is an indirect communication.

15. The data service of claim 14 , wherein the indirect communication is a carbon copy of a communication of the second user in a communication to the first user.

16. The data service of claim 10 , wherein a data element attribute provides indirection to another data element.

17. The data service of claim 10 , wherein the populating utilizes one or more of:

a default mask based on a context or situation;

a mask based on an application that initiated a roster update;

an update mask based on further communication between the first user and the second user;

an overt update mask based on a policy of the first user towards the second user or a plurality of other users; and

an administrative application.

18. A data service within a network for distributing data, the data service configured to:

detect direct or indirect communication between a first user and a second user;

create an entry for the second user in a roster of the first user;

populate the entry for the second user in the roster of the first user with data elements and attributes of the data elements, said data elements and attributes of the data elements indicating what data can be shared with the second user and how the data is to be shared; and

utilize the roster of the first user to distribute data reflecting the first user to the second user, wherein the attributes are data words corresponding with a mask.

19. The data service of claim 18 , wherein the mask specifies attributes for at least one of notification options, privacy options, data type options and subscription options.