Advanced Access has been advising agents to engage in practices prohibited by Google for years. When I got one of their sites three years ago one of the first pieces of advice they gave me was to do link exchanges with other agents. This advice was repeated in several of their monthly newsletters. I didn't do it because I knew Google would eventually catch on. If you don't want to get dinged, don't break Google's rules. I just feel sorry for all the people who got screwed because of bad advice from AA.