Providing your website users the ability to offer site feedback is a simple and inexpensive way to get high quality information about what is working on your website and what isn't. Users often are willing to provide their opinions about what they feel is missing from the site (or what isn't working). Make it easy for them to offer feedback by having a small form on the top or bottom of each page. This way they can quickly provide their feedback and keep surfing.
Tip: Give website users a simple way to offer feedback and you'd be surprised to see what they say.