I have the answer to all of this: If you want to stop most overposting, then do away with the contests.

hehe!
I am pro visible post count because of a few things - One being I don't think it will stop people like "Vehementi" from posting as much.

LoL. Sorry Veh.
Yes, I know it is very unfair to judge someone by their post count - But it still gets done whether it is fair or not. I would never soley judge a member by the size of their number - But it does factor in as a first impression and it does matter with newer members a lot when views conflict and sets an example of how to behave.
Taking out the post count is a bit like uniforms at school. It keeps everyone's appearence the same. That can be good, but it also negates the effort put forth by many members who would like their achievement to be noticed...
In all honesty, my post count means little to me. And to be
against taking the post count down seems aristrocratic to me. But, I do like that I have so many posts.. It shows I've been around here a long time and gives me a certain amount of confidence when I visit here. I like my effort here to be visible.
Newcomers tend to respect seniority and people who have been here for a long time and participate a lot deserve that to some extent. It might sound silly, but the regulars here set the mood, tone and the example that newcomers will follow.
Post count cons:
1.) Lower "gotta be on top" mentality
2.) May reduce junk posting
3.) Newcomers may be not taken as seriously?
Post count pros:
1.) Identifies member's seniority here
2.) Helps regulars set an example for behavior and tone of the forums
3.) Helps newcomers identify trustworthy information
4.) Location and status are useful (Asks for best deals in their country/Mod or not a mod?/etc..)