http://www.onlinegamingfun.com/online-gaming-revenue-2005/
If not permanent termination from online gaming, what can we do about online game cheaters, like on x-box360?
In January 2005, Bungie terminated thousands of Halo 2 players for cheating and griefing – costing Microsoft tens to hundreds of thousands of dollars in revenue per year1.
you could make other serious punishments like in the sighnup contract like a lawsuit or a 1 month suspension
Gaia makes $1M a month in virtual good sales