I was reading
this Yahoo story about the House GOP 'Leadership' race and noticed that Right-wing media outlet NewsMax had taken out an ad saying they were conducting a poll about the NSA wiretapping scandal. Curious to see just how badly they would skew the questions I clicked through the link (hopefully costing a few pennies in the process). You have to scroll about halfway down through
the page to get to the poll itself, but the questions look reasonable enough.
The catch is to have your voted counted you need to supply an email which will be automatically subscribed to their email email alerts. So primarily they are only gonna get responses from wingers willing to recieve their skewed news on a regular basis (or from people that submit fake email addresses - such as those for GOP congressmen or those ending in '@test.com')
The poll does have two demographic checks, one is your zip code and the other asks who you voted for in 2004. I don't know how this info will be used in the future which I find a little disconcerting, especially attached to a poll about privacy rights.