As promised, former Elgg developer Ben Werdmuller, has announced a new social networking project. He is working on a social mapping project called OutMap. In addition, he is beginning a web consulting service. He alluded to a third project that he is keeping under wraps.
OutMap appears to be a social geographic information system in which a user can create a map space and invite others to contribute. Initial release is slated for June. Meanwhile, you can leave your email address on the OutMap site if you are interested in participating in beta testing.