I think the posters should be able to delete their own posts cuz its their post and...ya

why not just edit it and put nothing?

I'm not too keen on allowing people to delete their posts. 1) It would be very hard to delete them in the first place, because you would get timed out most of the time. 2) A thread starter could delete the ENTIRE THREAD with a topic of 100+ replies 3) Once a thread is deleted, it can't be brought back.