I removed my CPA ads because idiots would click on them and get directed to the CPA site and then come back and post negative testimonials they copied and pasted about the CPA site thinking that it's my site.
In my opinion, Flippa should remove the comments section of the auction. Or atleast review each comment or have an advanced filter for them. In the Flippa guidelines they say comments should be neutral, yet most of them on my auction have been really negative, disrespectful, and assumptions.