That's what it's supposed to be, not what actually happens. As level 50, zalvati0n should be able to make 20 posts per day, not be blocked from his first post in more than a month. Sometimes, however, the forums give out this error when people are nowhere near their limit. I'm supposed to be able to post five times a day, but I've more than once gotten that error on my first or second post. Sometimes even after not posting for several days, my first post will get that daily limit error. I've heard from lots of other people (including zalvati0n here in this thread) who have had the same problem. As near as I can tell, it seems to be random. The forum software that checks for these daily limits is buggy.