I've been thinking for a long time that I wish there was a good way to get anonymous feedback from my clients. When I ask them how they like the work I always get positive responses, but I'm sure theirs some valuable critique out there that I could stand to hear. Working by myself means I'm far away from getting outside assessment and feedback. I'm sure I'm not the only one in this position.

What I've been imagining lately is some kind of online anonymous survey. I could email it to all of my clients asking them to give me feedback about what is and isn't working for them in regards to my practice. I know I could write something up and use surveymonkey.com, but i'd love to not reinvent the wheel. Is there already a model like this out there?

Have any other private practitioners given their clients space to give anonymous feedback? What method have you used?