I can recommend Valued Opinions, Panelbase, Home of Research and Ipoints. These are UK sites. Ipoints isn't just a survey site, there is cashback shopping, a search engine and free points for signing up for newsletter etc.
The one that I find good is Ipoints, as you can change the points into actual gifts, I get DVD's. I cannot remember the last time I paid for a DVD as I either get them through Ipoints or with other companies get rewards in HMV or Amazon vouchers.
The only one that I have ever taken part in a focus group for was Hom of Research, £25 for just over an hour typing and answering questions. A doddle as I'm a typist.
If your in the UK and would like me to refer you to any, send me a pm and I'll get you signed up.
