Best use for 100k indexed pages?

I have a pretty simple method for building sites that get about 100k indexed pages. Traffic is about 25,000 uniques per month, most are bots, search traffic is about 1000 uniques per month. I built these sites as a test to see how well google would index without any IBL's.

Suggestions on what to do with sites like this? Is there a market for people looking for sites well indexed and high traffic?