I like to bet people a quarter. I pick a quarter because when someone wins or loses, it's completely about the principle rather than the money. If you bet someone $100 and you win, you're focused on the money. If you bet .25c, it becomes totally about pride.
So I just bet Cory a quarter over the following proposition: Which will have more North American users two years from now: Second Life or WoW?
Not surprisingly, Cory is going with SL and I'm taking the other side.
The bet, of course, becomes a test of both SL's growth projections (quite robust of late) and WoW's ability to retain or grow its subscriber base. It could also therefore be seen as a test of the long-term growth potential of user-created content versus the more standard entertainment industry model.
What say you? Help us make our own futures market here.