In my previous article, Too much SEO and Google will penalize your site, I wrote that this is going to cause a lot of angst for SEO companies. True enough, BuildMyRank.com got smashed on the 19th March 2012.
They announced this terrible news to their clients,
Unfortunately, this morning, our scripts and manual checks have determined that the overwhelming majority of our network has been de-indexed (by Google), as of March 19, 2012. In our wildest dreams, there’s no way we could have imagined this happening.
Very sadly, they had to shut down their service indefinitely.