I have been thinking about the manual reviews lately, most of my sites would fail very, very hard on them... Because it is pretty obvious that almost all links are bought... Fortunately my niches are small and competition either has no clue or is blackhatting themselves. There are a lot of niches where the whole top ten consists of spam gone wild, how would a manual review be of any value in those niches? If you ban one site with crappy links, the next one is the same and has the same crap links... Then there are niches where I can imagine that google doesnt care at all, for example porn and gambling. One because the big G does not make a dime of advertising and two because (especially with porn), I can image employees do not want to research link profiles and niches in porn/gambling. Have you guys ever had a pornsite or gambling site kicked out of the serps? What are your thoughts on this?