56 posts/day is kind of impressive.
I did 50 posts one day just to see if I could without being a troll/spammer/annoying. It certainly is possible, but you would need to spend a lot of time sitting in front of your computer. I leave ATOT open all day while I'm at work and only average around 6.
Most of the people who I find are memorable have some kind of consistent personality that comes across in their posts. Usually takes 2 different forms. They are either the type who act like dicks, who think they're right not matter what, and if you disagree than your a fucking idiot. I am guilty of this myself sometimes, but try not to be like this as much as possible. The other form is the polar opposite. Their posts are level headed, comprehensive, and well thought out. And they can voice their thoughts, and opinions without shitting on those who disagree with them.
I could provide plenty of examples of both, but don't want to be accused of a callout, or suckup (depending on the case).