Now this is useful: Google announced today that you can create forms using spreadsheets in Google Docs. You may find it easiest to open a new spreadsheet, save the blank document, and go immediately to "Share," where you'll find the share as a form option. Following that will offer you the chance to create a form using a wizard. All of which is cool. But the kicker is that you can then send this form out via email and your recipients can fill it in without having to log into Google or, indeed, have Google accounts. Their data, sent by reply, then gets fed right into your spreadsheet.
The image below is of an email I sent to myself in order to see how easy filling out such a form would be. As you can see, it's a piece of cake:
This makes surveys and stats collection pretty easy, it seems to me.