I remember a day that I made 20 posts. The posts were on new topics and existing threads that I have something to post. You can post as many as possible as you like, provided that you posts are meaningful, constructive and helping others, those are not spams. But if anyone is spamming, the person would later be known and be given neutral trust or included in the list of spammers.

The gap between my post may be less than 3 minutes, it may also be more than 1 to several hours. It depends on new topics, continuous discussion on the existing thread that interests me.