Abstract: In some examples, a system for tracking user activities can include logic to log a plurality of activities corresponding to a user. The logic can also separate the plurality of activities into online activities and offline activities and establish a characteristic corresponding to the offline activities of the user. Furthermore, the logic can generate a message based on the characteristic.

Abstract: In some examples, a system for tracking user activities can include logic to log a plurality of activities corresponding to a user. The logic can also separate the plurality of activities into online activities and offline activities and establish a characteristic corresponding to the offline activities of the user. Furthermore, the logic can generate a message based on the characteristic.

Abstract: An indication from a first user is received. The indication includes uploading a first file to transfer the firs file from the first user to a second user. A social graph is determined. Whether the first file is stored in a repository associated with any user found in the social graph is determined. Responsive to determining the first file is stored in the repository of any of the users found in the social graph, a link to the first file found in the repository is transmitted to the second user. Responsive to determining the first file is not stored in the repository of any of the users found in the social graph, the first file is uploaded. Responsive to uploading the first file, the uploaded first file is transmitted to the second user.