I know that paying for membership may be crutial to survival, but there you alienate 98% of your members.
People get news here (me included) but we are mostly just casual members, that, facing the oppertunity of NOT having this site, would be able to go other places. Sure it'd be harder, but you know...
You should sell stuff with Amazon, and I'm surprised to note that you don't have a shop set up around here. T-Shirts, mousepads, maybe even setting up a member-administration mini-golf/go-karting/park outing event with a fee (not unlike the Cedar Point charity golf game that was documented on GTTP.)