I think who_anon is a place where people like to let off steam. It's anonymous so it's safe, there's no consequences and as such people who wouldn't dream of saying boo to a goose in real life are suddenly tigers. Yes some of it is deliberate grudge stirring wank but there are sometimes sensible discussions hidden away among the crap. I don't participate but I do read and sometimes it's a nice handy way of alerting me to the people I need to avoid like the plague, sometimes it's highly amusing in a "no matter how bad my life might get at least I'm not that person" way and sometimes I just blink at the sheer insanity of people wasting their lives arguing endlessly about which fictional character is better.

As for the attention whore thing. Harsh definitely. I'm afraid it was the pie watch thing that seems to have earned you the black marks. I think certainly in the beginning you posted it to one comm (although in fairness only one) but I think there was a fanon perception that you were posting it everywhere and actively seeking attentiom. Personally I found it unfunny and repetitive and now every time someone bashes Ianto/GDL fixating on his weight you've become the one to blame for it. Not much you can do about that sort of nonsense except hand wave and ignore it.