The difference is that, when I am shopping on InterestingContentForSaleSite.com, now I have TWO sketchy companeis to worry about, InterestingContentForSaleSite.

The difference is that, when I am shopping on InterestingContentForSaleSite.com, now I have TWO sketchy companeis to worry about, InterestingContentForSaleSite.com and paidlinkto.com 2 vendors is infinitely worse than 1, because they can blame each other for whatever goes wrong, creating an unbreakable circle of blame. If I try to chargeback paidlink.to, they can say "the link works, not our fault that the user and InterestingContentForSaleSite.com disagree on the value of the link". At least PayPal has some reputation for consumer protection.