Launching this week, ImThere is a mobile social network focusing on real-world events, reports Mashable.

Users can add events, manage them on a personal calendar, get notifications on what's new, and share event info with friends. There are also standard features like a photo gallery, friends functionalities and on-site email.
Events are shown in a "blog-like" presentation on the main page, and if users plan on participating in an event, they let everyone know by pushing the "ImThere" button.