Does google ban sites for this type of thing? If so, do they ban the site in question or will they also ban your entire network of sites? I ask because i read horror stories and some people blame mass backlinks on it.
What about the accusation that google banning for these things is a myth because you can easily do it to your competition?
P.S. I have yet to see any movement up or down a single position in the rankings after 3 weeks of having these 4k backlinks indexed.