I picked up an article about using Google Docs for creating surveys on your website. It appears to be a cheap and easy way of gathering information from your visitors.
It is probably worth checking out how easy it is to do this.Have you ever wanted to poll your website visitors on their interests or ask them for feedback on your site content? Now, using a Google Docs spreadsheet, you can create a simple form, collect responses from your visitors in an online spreadsheet, and publish the results on your website -- in a few easy steps. All of the data will be kept in your secure, password-protected spreadsheet.