mhesseltine's Journal: What's the deal with some moderators?

I just posted a (IMHO) well written post on Google. At the bottom, I put "P.S. First post?" because when I started writing the comment, there weren't any posts and it looked like it might be first.

It got modded up to 5 quickly (insightful, interesting), then gets a (-1, Flamebait). Quickly returns to 5 with another insightful. Gets smacked with (-1, Offtopic).

It's back at 5 right now (thank you to the intelligent moderators). My question is: Did someone read the post, see the words "first post" and decide that whatever was said before that was irrelevant? How big is the bong of the moderator that looks past a post to a PS and moderates based on that?