Once again as I posted in Warriors post(If you didn't read it, I will say it here) by making these posts you're not making anyone want to stay anytime soon. The reason this being is high ranked people such as you(matt), warrior13 and so on who are really active are stating the site is dead.
If I was getting paid just to find niches in ways to promote advertising, I would! The issue is, I don't know where to start. I personally think the forums need a little pazzaz. Make it more into a community forum, and not just bind yourself to a gaming forum. What supercheats also needs, is a re-model. The first thing I would suggest is rebuilding the userpanel. I don't like the idea of having to enable a checkbox to send a pm, to a user. I think having the following is better:
A private message box, and having a separate thing for profile comments. If rich really wanted too, he could monetize the groups! Allowing a user to 'buy' a group is one idea. Also giving the people custom rank bars by the owners of the group! Rich also could even implement a VIP group for things. What would the VIP have your asking?
Well a couple things, a custom rank bar saying VIP user/Donator,
Access to a VIP forum,
and lastly access to VIP things; such as, things that are being developed on.