Neet little app used it at podcamp toronto. Android needs a bit more work so it works on all android phones
Introducing MeetVibe for Android.
MeetVibe lets you view the profile of others in your direct proximity. Simply tap on the Discover People icon to activate the proximity feature. The user’s profile provides helpful context and the short Talk to Me About entry gives you an ice-breaking topic. If you would like to continue the dialog, a follow-up coffee or lunch can be scheduled directly within the MeetVibe app right away.
Version 2.0.1 contains a few stability updates.