Thought that might get you looking, however anyone with JuicyBrainsPanel ?
I've been with them for a while filling in the odd survey and exchanging for £5 amazon vouchers. My current balance to spend is under £5 however they have just undergone a system and update and reset my password.
Upon checking they have increased my balance by £90 - definitely a major error by the looks of it. I was able to redeem this amount instantly for amazon vouchers.
Check your email now if applicable.