My recollection wasn't that Justine inadvertently mentioned it in a blog, it was on a thread someone started bemoaning the fact that everyone new to MN was really, really dull and thick and how MN was shit. Thread got nasty, J came on to say words to the effect of "I'm sorry you're unhappy, and I was gutted when I heard you'd set up a new forum" at which point thread got much nastier and exploded.
Anyway - it was all a very long time ago. It wasn't just words on screen, it was more than that - but so much time has passed and so many people have come and gone since then that really, what's the point? I don't think anyone actually cares anymore - it's all just shit-stirring.