If you want to earn £9 for 18 months work and 'I've been a member of YouGov for five years and have earned two £50 in that time.It does take a long time to get to that mark,my last cheque (received three weeks ago) took two years to accrue.I've noticed that sometimes I go for ages without getting a survey and then I'll get 2 or 3 together.'......click here
and click here
I think that you will find most of them need a lot of effort for less than minimal pay. There also seems to be some problems with payment as well.