I've been a member of MySurvey for over a year now and have made some nice spare cash with them. They frequently send surveys by email and they give you the option to download a toolbar which will alert you when new surveys are available.
MySurvey has been one of my favorite survey companies to work with. They have always been quick to pay. You can cash out at 1000 points, or $10. It's a great deal, and it's free to join. Check them out - you won't regret it!
