For me it is a 'must-have' feature, just before a hosted-environment
I want my users to give me feedback with less than 3 clicks - a registration form is a show-stopper for them and me.
This is actually exactly what I was searching for a good small feedback system without big registration requirements. I want engagement and not necessarily user data.
Agree... I wanted to vote here and at first didn't due to having to log in. Decided to create an account since we will probably try this out within our organization.