I am not a laywer but I believe my web based MMO, Forumwarz, meets the criteria. Forumwarz launched in 2007. You can buy brownie points with real currency. The

I am not a laywer but I believe my web based MMO, Forumwarz, meets the criteria. Forumwarz launched in 2007. You can buy brownie points with real currency. The brownie points can be converted into the game's currency, Flezz, which can then be gambled through conversations with GambleBot, a robot you can speak to via IM in the game. Your winnings can be used to purchase virtual items, those items can be traded with other players through our auction house (the auction house was added in 2009, I believe). There are limits on how you can trade the virtual items to discourage people just buying their way to the top of the game. Obviously I'm not a lawyer but I feel like if our game isn't exactly prior art, it's pretty damn close!