I just got another web application up and running, Javawizard's Surveyer. It's a web application for creating and taking surveys. It's not fancy or anything (I wrote it in less than 2 days), but it's easy to use, and free. In a few days, I'm going to add the ability to actually embed a survey within an email. When you open an email with a survey, there isn't a link or anything; the email actually appears inside of the survey. I've tested it out with gmail and yahoo mail, and it works with both.