24. A method comprising: receiving first activity information for a sender of a message to at least one recipient by a collection resource at a Web site, wherein the message comprises text associated with the Web site, the collection resource adds a first link to the message, and no personally identifiable information of the sender is collected in collecting the first activity information; storing the first activity information at a storage server; receiving second activity information when a recipient access the first link send by the sender corresponding to the first activity information stored at the storage server, wherein no personally identifiable information of the recipient is collected in collecting the second activity information; using at least one processor, attempting to identify a first node representative of the sender in a social graph; when a first node representative of the sender in a social graph is not identified and after receiving the second activity information, creating a second node to represent the sender in the social graph; retrieving a plurality of categories, wherein each activity information for a plurality if activity information stored at the storage server comprises at least one category; analyzing the text to assign a first category from the plurality of categories to the first activity information comprising the text; creating a first edge between the first node and second node, wherein the first edge is representative of the first activity information; and assigning the first category type to the first edge.
24. A method comprising: receiving first activity information for a sender of a message to at least one recipient by a collection resource at a Web site, wherein the message comprises text associated with the Web site, the collection resource adds a first link to the message, and no personally identifiable information of the sender is collected in collecting the first activity information; storing the first activity information at a storage server; receiving second activity information when a recipient access the first link send by the sender corresponding to the first activity information stored at the storage server, wherein no personally identifiable information of the recipient is collected in collecting the second activity information; using at least one processor, attempting to identify a first node representative of the sender in a social graph; when a first node representative of the sender in a social graph is not identified and after receiving the second activity information, creating a second node to represent the sender in the social graph; retrieving a plurality of categories, wherein each activity information for a plurality if activity information stored at the storage server comprises at least one category; analyzing the text to assign a first category from the plurality of categories to the first activity information comprising the text; creating a first edge between the first node and second node, wherein the first edge is representative of the first activity information; and assigning the first category type to the first edge. 27. The method of claim 24 wherein the sender is using a nonmobile device and the text comprises content accessed using a desktop application, and the recipient accesses the first link via mobile device using a mobile application.