Interesting idea. Now you just need to make sure that the mining doesn't affect the performance of your game. Plus maybe people will complain that the computer fan is too noisy when running the game. Of course being a game makes that easier a tiny bit.
PocketGamer has a bit more info on this:<p><a href="http://www.pocketgamer.biz/r/PG.Biz/Full+Indie+UK+news/feature.asp?c=54970" rel="nofollow">http://www.pocketgamer.biz/r/PG.Biz/Full+Indie+UK+news/featu...</a>