I was in a small forum community that had to delete all posts in public forums due to a 4chan attack. We lost many good discussions that were long running topics that spanned more then half a year just because some idiot from 4chan thought he knew more then one of our members. The result ended in that we had to repost all the help and info topic, dig through our computers to find tutorials we wrote and posted, and had to start from scratch besides less then a hundred posts in private forums, and the posts in the trash forum.
