Gopaisa is a good cash back site it offers more cashback than other sites and it is genuine there is no any fraud to made transaction in this sites but there is a problem when you made transaction of your cash back to your account.
It charges rs.100 per 1000 which is flat 10 % of your earning whic is really too much to think another time for made any purchage from gopaisa and one more problem is that it set a high limit for the cashback which is transfer to your account and it takes long time to add 1000 in your account.Otherwise this site is good enough for purchase and made High cashback.