I don't do reputation management anymore. Now I build tools to do real reputation analysis, and fight the very things I used to do. I'm like Darth Vader in the last few moments of his life... Only I plan to live a long while.
At Stremor.com we have technology that "breaks" SEO so we have better search results at http://www.samuru.com than you would have using link authority. We have tech that can detect writing styles to tell that 6 reviews all came from the same person. We can do this for things like YELP or Amazon product reviews. We also do this to detect web content that was a Paid Review.