So, how many tea parties have you been to, and how may participants have you talked with?
I've been to a few and know a lot more. They're just average folks who mostly have never participated in any kind of politics before.
Some of them feel strongly about government-funded abortion, sure, but that isn't a main concern. Big government is.
Sure some people are trying to make a buck. That will always happen, just like the guy selling lapel buttons at the Code Pink fiascos.
You don't like them, don't participate.