man I don't check this site often enough to reply quickly...
Anyways there aren't exactly 4000 rules you have to follow in the clubs, and besides that, the post patrol clean up what needs to be cleaned up. Are the people who's threads are getting closed getting strikes? Not unless they're breaking major rules or have broken the same rule multiple times. It isn't so much tattling saying "she's a bad person get her in trouble." What's actually happening is "Hey you accidentally broke this rule, here's where you can do this." Consider it like the rules of a sport. If you randomly grab the soccer ball, run with it, and throw it into the net when playing with your friends, they tell you you can't do that, it isn't allowed in the rules. You aren't punished, you made an honest mistake not knowing.
What irks me is when people get angry at others being a part of the community and helping out moderators for just doing their part to keep things clean. As for it being petty, imagine this. Nobody ever cleaned up the self-advertising threads or the editor threads or the read for read threads. Now there's a consistent wall of spam all throughout the first 8 pages of every club. How do you find something? If there's a place to do exactly what you're posting, and most people check that spot to find people who are doing what you're posting, then why post outside of it, pushing down any other thread?
It isn't so much the rule breaking, it's the fact that it takes up space for other posts. There are places to post just about anything you want, all you have to do is look for a solid five seconds. If everyone uses this simple system, then everyone can find exactly what they're looking for. It is more efficient this way and also easier for the moderators to keep track of.
By heard I mean someone said to me. I meant the term quite literally, and as far as I'm concerned I have no knowledge of a leader of the post patrol. It's just people who give the moderators a hand.