I know plenty of people who know just enough to be dangerous like that -- they know that links are the one of the main factors in rankings and then get tunnel v

I know plenty of people who know just enough to be dangerous like that -- they know that links are the one of the main factors in rankings and then get tunnel vision in increasing linking domains. "Boy that 1000 links for $5 sure seems a lot more efficient than the slow, organic process of building up a resourceful, industry-relevant blog!"