A Search Engine Watch Forums thread asks Do you Audit your Google Optimizers work?
By "Google Optimizers" we assume the thread creator is talking about a Google representative's work. These optimizers to the leg work for you and you can just sit back, if you like - or you can audit the work.
It seems like most do audit the work, but the question was not too clear in the thread until later.
This can make for a great discussion, forum thread at Search Engine Watch Forums.