I'll add my opinion to the discussion, although I may not have much of anything new to say.
I voted at least a day or two ago, so I can't remember for sure, but I think I voted "yes"; however, I'm happy either way. The one stand out time I noticed a problem was when we had a member who posted lyrics every day, more or less, for a period of time but never once responded to any comments about them nor did s/he ever post anything whatsoever besides lyrics. No explanations of what s/he was looking for in terms of feedback; no feedback for anyone else; no other posts or comments at all. Limiting posts would have slowed that person down (maybe) but wouldn't have solved the actual problem.
My point, I guess, is the problem is sometimes more of an attitude or approach to posting rather than the frequency of posting, so it won't be fully solved by setting a specific limit.
Vicki
PS: Totally off-topic, but I hope the upgrade won't cause us to lose the ability to choose our fonts when posting....