BuddyPress.org

I am also very interested i this functionality. The ideal for me would be a sidebar widget with something like “suggested friends” or “people with similar interests” that lists a few links to people who’s profile info is similar. A weekly email notification of these people’s profiles would also be fantastic.

This has same great implications because it encourages users to interact with people they don’t know and they are (might be?) more likely to do so because of their self-described similarities.