Conclusion

Basically these sites work, if you stick to supported ones.

Do a bit of research behind the site first to see if you can find people who have actually got something from them.

My advice is to check out http://www.exceem.co.uk

This site will keep you on the right tracks to make sure you do not get scammed by anyone out there.

but if you are willing to part with say £5-£10 and put in a little bit of effort. The rewards are worth it.

Thanks