From what I can tell, it's a mostly forgotten feature on AZ. We're able to bet x amount of virtual dollars on real pool matches, in order to V-boost, (or V-lower) the V-number under your user name.
The last event we were able to (V) bet on was the Turning Stone event...There have been a few matches of note since then, but we haven't had the option to blow our V-Bucks on them...
There will probably be a thread to vote on the US Open winner, though. I think I'll side with Fatboy on this one, and pick Johnny Archer. He's due for another big one, and definitely has the talent to make it happen.