turbocharged - 11:36 am on Jul 9, 2013 (gmt 0)
tripadvisor=adwords buyer and google friend.
I think you are partially correct. Trip Advisor is a member of Google's political lobbying group named the "Internet Association." It's worthwhile to look up the members of that organization as many of those businesses are currently benefiting from excessive host crowding. Whether it's intentional or not, it really leaves the impression of significant bias in the SERPS.