Most of the stuff people have said is good. You are already doing something right by posting to this forum. I get a bunch of visitors from these forums, and they are high quality i.e. tend to look at a lot of pages. Makes sense since my blog is related to PD.
Try using StumbleUpon. Submit your sites with a good review, ask a few friends to vote, but also submit other pages and stumlbe a lot, ranking other pages. This increases your audience -- the number of people who are shown pages you like.