Left-or-Right is a simple and fun site. You can recommend a topic and can get a link to your site.
Note though that any inbound clicks you gain from it are probably not your target customers (unless you happen to be looking for tech savy, optimistic, retro, Firefox users).
The results from LeftOrRight.com are a good example of self-selective surveys. If you want a certain result just ask certain folks.
The Actionable Point
Have some fun!