hrm? i'm guessing you're referring to the people that post one for every single day for a good 2-3 weeks in a row? :P
How about the people that post 2-3 times in one day... I think that the system should realize that someone has already posted once and delete the rest or not allow anymore until the first is deleted....
I'm with Tuttle. More than once a day just is too much, but I do think if your really want to meet someone every day for three weeks, go ahead and post.