Even though the guy that runs it sort of stumbled into doing some clever things without any business sense, the forums at Something Awful have some really creative ways of making money. Of course it's impossible to replicate that model without a similarly feverish demographic, but banning people constantly only to have them pay another $10 to re-reg and, particularly, letting people pay to change each other's avatars as a way of insulting one another is really genius. You can watch people get into wars where they're changing each other's avatars and changing their own back and each change of another's avatar is $10 while each change of one's own is $5. It's a little cash register.