Forum Moderators: martinibuster
I guess, if they do it through an agency or they link to the usual suspects it's rather easy to detect.
Many paid links leave an easy trail to follow.
Risky? If you get caught up in a ring, sure, there is always a risk.
Basically it comes down to some paid links work and some paid links don't work (for link manipulation). Your mileage will vary. Getting caught up in an exchange brings with it a certain level of risk depending on the type of exchange.