I have been a member for a little while now, I did have a problem with a survey and almost instantaneous Mike emailed me back and was going to look into it, so very prompt and ever so efficient!
I have done a few surveys (not many have been sent to me) so unfortunately I can't say that I have been paid, and the light at the end of the tunnel cannot be seen for a payment, but surveys are reasonably straight forward, but it isnt big money for them though.