Using a map displaying one or more mobile devices based on their current locations, a user of a mobile social networking server selects one or more of his friends, from one of a plurality of friend lists supported, to communicate collectively and share information collectively. For example, by selecting one or more of his friends from one of the friends lists, the user can communicate a recorded message, initiate a conference call, send a task list, retrieve information from their mobile devices, send notifications, etc. If the user of a first mobile device accesses the mobile social networking server using the first mobile device, that user can select one or more friends (from a selected current list) and access their blogs and review their data.