Basically, back in the olden days, some girls decided Avril was their 'thinspiration', and thus became anorexic to be like her, and started a forum sharing bulimia tips.

It eventually just became a mess, with people asking advice on how to rape their parents, describing an affair with their pets where they ended up murdering them for 'cheating', 12 year old girls asking how to perform coat hanger abortions, etc.

Then they decided to 'aspire' to be like them hungry kids in Africa, and somehow they decided that their 'thinspiration' were the Jews in concentration camps, and began glorifying Hitler and planning to do a Holocaust of themselves in order to get skinny, but then it got shut down.