Some of them are legitimately being used, and I respect that.
While some of the others are just sitting there, is this what they call domain squatting?
One domain was offered for sale, so I emailed the guy and he wanted $800... I wasn't planning on buying a domain from him anyway, because I'm not sure how safe that would be. $800 ohhh no thanks.
I guess I will just have to keep brainstorming.