I discovered this post via SEroundtable and honestly thought there will be thread about it here too so I came to see what you all guys think. BUT there is no thread! In short: Swedish blackhatter was ranking for payday loans terms in Sweden using his own blog network. He is a developer and thanks to his technical skills he could scale very fast. In fact, too fast. White hat competitor who loves to repeat that he gives 3 percent of his income to children cancer charity wrote "Dear Mr Cutts" post and twitted it to MC. He even made a humorous video for Mr Cutts which, I hate to admit, made me laugh. The result: all blackhatter's sites are penalized, even the ones that weren't ranking and the ones that didn't have any links!!! In one day everything was gone. Sebastian (blackhatter) goes into analysis of what he did wrong and how the whole thing happened. It became even more fun when hysterical competitor made an answer post. It seems like they decided to respect each other at the end and Sebastian definitely doesn't want anyone to troll his white hat competitor (some people will want to), but the whole thing is fascinating. One of the things that surprised me is that apparently he had some serious footprints and it still worked until he was reported. Here is the link, grab your coffee, it's a loooooong read: http://sebastianjohnsson.com/successfully-trolled-google-destroyed-entire-affiliate-business/ For those who read the post, what do you think? What's your takeaway?