Invite nearby people join your chat even without network, even they are not running this app.
When most people nearby are strangers (e.g in airport waiting area), how to break the awkward moment? Introduce this app to him/her and start the chat!
When being with friends together but not convenience to buzz (e.g. in library), try this app!
When you open this app, the nearby apps which grant the bluetooth access will be notified!
Its free! Works without any cellular network or WIFI!
Its secure! No central server to hack!