Infamous Harry Potter BNF associated with Cassandra Claire, notable for her epic sockpuppetry. The short version is “Harry Potter fan creates veritable army of sockpuppets in order to become BNF, causes incredible amounts of wank along the way.”

But for those who want more information, CharlotteLennox's The MsScribe Story: An Unauthorized Fandom Biography is worth a read.

She is often discussed on the meme as being one of the all time great wankers and a big bully. (here)