Sometimes when I see or make posts, when I come back later they're not there. What's happening?

For example, in the tournament entries thread, me and someone else made a couple of jokes about Pokedude's comment 'WHAT ABOUT ME!?', and later, when I come back, both of out comments are gone. Were they taken down or is something glitchy?

I'm pretty sure they were taken down but who knows
Remember he's a mod he can do that

No, I've been deleting your off-topic posts. That thread is just for signups, not OH LOL IM THE BEST I WANT TO BATTLE THIS PERSON, etc.....

Ah, ok, I though I was going crazy. o_O

nope not yet
eachlaf:
on topic: yeah sometimes I go on and they're gone oh well