There are as many scam sites as are the good and genuine ones..and we can only avoid the scam sites by doing a thorough research on them. Usually when some sites promise a lot to you or even need your money to be invested to get started are the ones potential of becoming scam sites later on. But they are all short lived in the end.

I have been scammed by few PTC sites only, which never paid me and adbux and bux.to are one of them..they paid me in the beginning..but now, its over 3 months and I have not received anything.

Result--I don't use them now.