How to listen to customers, and not just the loud people
startuplessonslearned.blogspot.com
startuplessonslearned.blogspot.com
Pay attention to your heavy users, or the people with lots of friends, or various other metrics of activity. Many times, they can become your friends with minimal effort, and soon they'll IM you whenever they hit a bug, and tell all their friends. The more you know about their lives, and the "problems" that your site is solving, the more focused and direct the work can be.
Yay internet.