Always Be Testing: 8 Services For Usability Feedback – ReadWriteStart

1. UserVoice

2. Silverback

3. Feedback Army

4. UserTesting

5 & 6. IdeaScale and Crowdsound

7.GetSatisfaction

8. UTest

via readwriteweb.com

This is an excellent list of the various sites that are related to testing and feedback. Click thru for detailed summaries of each.