micro niche site got deindexed after pr update

ScripterAlex said:

One of mine, which has enough content to be an authority site, and its all hand written quality stuff, took a huge hit and disappeared for its main keywords. I'm not sure if its PR related; the only thing I did differently was I did a big scrapebox blast to tier 2-3 links, and those are the keywords that I got delisted for. The site is otherwise still listed and ranking on long tail keywords, but getting only 10% the traffic it was.

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