I've been watching and waiting for this for a while and yesterday they announced that BigScreen is being released for FREE on Steam today (28th April).
For any that don't know about it already it's a bit like Virtual Desktop BUT multiplayer! You can share the room with your friends from around the world. It has positional audio so you know where the person is who is talking. You all have your own personal screens but if you have something you want to show the others you can push your screen to a big screen up front for all to see.
It will be great for general chit chat, watching video's or playing games.
Although the main app is currently free they may release paid for additions like avatars and extra environments
Woo BIG SCREEN is awesome but like / SpyderSi said games seam to struggle with frame rates for some reason? this reminds me a little of PlayStation home .
I imagine if you are sharing content it has to stream said content to the people you are sharing with. If so, bandwidth will definitely come in to play!
I have it downloaded but haven't tried it myself yet to see. I'm a bit sick at the moment. Actually quite sick >< Debating going to the hospital. Long story, totally off topic so yeah, we'll save that lol.