Consumer (web surveys that you can participate in for free and/or get paid):

Your opinion counts. And it might be worth $1000!
Got Opinions? Take an online survey today for a chance to win $5,000
Vote for products of the future- Chance to win $10,000
Earn Up to $50 for Taking One Survey - Click Here!

Business (software and services to create and build online surveys):

Zoomerang.com - Online survey software
Lightspeed Research - Research & survey services