Did anyone get in trouble by using these services?
I've used one guy from Fiverr a few times - he claims he has a "network" of people giving these ratings and he charges 5 USD for 10 ratings/reviews/G+'s. So far, so good. I used him a few times (3 moths ago was the last time), but there is no telling, if he really has a lot of people rating for him or he just uses fake accounts from the same IP and so on. A risky business for us, I guess.
I'm now a bit more worried, than before, because today I've received an email from YouTube with this title: "This following video was found in Violation of TOU #4 Section H" - this means, that they've discovered, that I've bought views for one of my videos. I only did this twice for the same video (from two Fiverr users) and bought some backlinks - it was an experiment, if I can rank my video high on certain keywords (the experiment was a waste of money).
My account is thankfully still OK, but ruining a 3k USD / month business with such silly mistakes would be really painful.
Anyway, can anyone please share experiences with these kind of services? Thanks.