Probably because of his leeching attitude. Several months ago he posted a message saying he'd gotten everything he'd wanted from this site so he was leaving. Then a few days ago he reappeared asking for some things (quite abruptly too, imo). On top of that, Paint Wars, which a lot of people loved, was on again off again depending on his hourly mood.

Basically, I think Zig has burned a few bridges around here by acting like a child and appearing to demand things without giving much back in return. I know he asked for things in those other threads, but it's how he asked it coupled with his history.