I believe the old adage still holds true. When you're happy with a service, you tell 5 people. When you're unhappy, you tell 20 people (or something to that effect).

It's human nature.

Here's the funny part of it. A while ago, I was speaking with a "large" web host. He said that whenever there was a positive thread about his company, he would get 4 or 5 new signups from it that day. However, when there was a negative 12 page controversial flaming thread about his company, he'd get 30+ signups from it in a day.

Go figure.

Vito