Shake your phone and it will look up hangouts listed on Hyves near your position. It then randomly selects one of them and shows directions to it. Demo of the app is available here.
This application was built during a hackthon at Hyves during the Kings of Code conference by @nollbit @jbripley and @johanni.
This application is using the hyves private experimental api method called hubs.getBySpatialRadiusMostPopulair that hyves was kindly to open up for our api key. If you want to fork this app they will probably do the same for you.