If you're website is so great, then you've just admitted that you think your website is so great. Often times those who use your website, the users, could have something very useful for you, their idea of how the page could be better. They're like a team of developers ready to work for you for free. And yet many company's websites make the feedback form damn-near-impossible to find.
Therefor my Gold Star of the day goes to Adobe! For although Dreamweaver mysteriously leaves this xyiznwsk temp directory on my servers and is causing horrible network latency problems and hosing up my machine, they can blame that on Macromedia, and learn if I needed to provide them useful feedback, like "Frontpage is better". I did however, not leave any feedback.