Blind Amiga Fanatic.
A pejorative term that has somewhat lost it's meaning these days (especially in the post Amiga v Hyperion litigation era), but as all of the next-gen-amigaos trolls are perpetually stuck in 2003, to them it's still common currency.
The counterpart "BGF" (Blind Genesi Follower) never really caught on as "smurf" had already made it into the wild