Raphael, have you added filtering by reviewer's location? Most of responses come from Asia and from people eager to earn your 60c per response. They are positively biased at best, and half-assed and incompetent at worst.
That said: I receive a lot of positive feedback on the service and in the instances when someone contacts me with a bad experience, I take care of them. I'm a little surprised to see such a pointed comment about FBA on Hacker News. If you used the service and had a poor experience, I wish you would have given me a chance to do something to make it right with you.
I rejected good half of responses, but it also made me realize this:
Having thought a bit more about this whole situation here's what I think is the root of the frustration - I would rather not get to the point of needing to reject comments.
There are some obviously half-assed comments, and these are easy to reject. However there are other comments, still useless, that clearly had some time and effort put into them. Rejecting these seems unfair, especially considering the price point. And there is lots of these comments.
That's why an ability to focus the survey more precisely is IMO essential.
Hence - my question. Have you got a chance to add country filters to FA or not?