Any body else used this site
just sign up with site (that's an email address and make up a pass word)
Used it to get o2 broadband
Signed up with o2 through this site and got a check this morning for £50
the broadband only cost me £12 a month with 2 free months from o2
that means its cost me about £6 a month

I use www.quidco.com

Never had any problems with them and got almost £150 for last years xmas shopping