I sorta like this idea. Whats fun about gamers is that they (at least in my experience) are very good at spreading the word to other gamers. They talk, a LOT. Also, if they can use something to buy hardware, thats pretty much good enough for them. So, if this catches on, I can see this becoming huge.
When I was chatting up bitcoin while playing Diablo III ealier this year, I would run into someone who knew about bitcoin once every 10-20 players.
I wonder what the stat would be if I played now. You may have just inspired me to do some D3 market research.