I'm currently looking into doing some independent internet survey research and am looking for a few pointers. There are several services that allow you to design surveys & collect the data, but how do you go about getting people to the surveys? One common sense idea is looking for user forums related directly to the subject (e.g., making a post on vnboards.ign.com if you're researching video gamer populations), but does this lead to problems with having a population that is already biased because only a minority of such a population uses those forums? How about taking out Google AdSense ads? This seems like a cheap way to get a high number of hits (I've seen some reports of over 100,000 hits over 6 months for a cost of $24 or so).