This one is so good, I am copying wholesale from Andy Sernovitz
Coffee Cup Software has an amazing page on their site where you can ask 100 real customer what they think about their products. We're talking about the ability to email real customers, and get those people's unfiltered feelings about the company.
It's such a fantastic demonstration of trust and confidence in their products.
Check this out, then copy it! Your customers will be glad to recommend you ... and they'll appreciate the public recognition.
(Thanks to Sean Cheyney for the tip.)