>> I notice Wikipedia ranks highly for my keyword, "Master Cleanse." Unfortunately, Wikipedia's editors' biases against alternative medicine make their article less than accurate. For instance, my book was mentioned as making the Master Cleanse popular again in the 1990's. My book was published in 2004. Even after I corrected it on Wikipedia, it was changed back to the previous inaccuracy. Last I looked, Stanley Burroughs, the developer of the Master Cleanse, was called an "alternative medicine performer." It's too bad you can't devalue their inaccuracies.

Addressing inaccuracies like this is always going to be tough for Google, at least with today's technology. Currently the only real indication of accuracy can come from site authority, which in  Wiki's case is one of the highest.