I know what I want to say but the words won't come out so here are a couple of links :)
http://www.bluetooth.com/bluetooth/
http://blogs.msdn.com/tiptalk/archive/2006/01/ 23/516407.aspx
Basically if both you and someone else in the room has their bluetooth switched on their mobiles, you can send pictures, videos and sounds to each other. You can set your phone so that it's always on (but I believe that runs the battery down) or just turn it on when you need it. You are usually asked when someone wants to send you something and tell the other person a numeric passcode so that you've both entered the same one, then you can get sending! Sorry if you're even more confused now, when I first got a phone with bluetooth I was clueless, you really need someone to show you. Hope those links help. :)