Quote Originally Posted by kl522 View Post
.... I think it is obviously unnecessary. One will mostly know if a poster is going to post spam or not after his first post. ...
I fought spam here under the old forum software (and wiki software) for years. You dangerously underestimate the lengths that spammers go to. I've seem a vast range of spam, ranging from blatant porn posts including graphic porn images in the first post to completely innocent looking posts that the spammer made only to come back months later and edit to include their porn links. I have seen many cases of this. A spammer is hardly beyond making a dummy post if he learns that is all that is required for his account to be able to freely post their advertisements and malware attacks. It is a small imposition to ask that new user posts be verified long enough to conform that the user is a valid community member, and the reduction in spam attacks more than justifies it. Moderators should also be keeping an eye out for posters making non-informative noise posts (one isn't all that unusual, but when a new user's first dozen or so posts all read like "that's interesting" or "thanks for posting that" it should raise suspicion. Maybe too many posts complaining about anti-spam policies might even draw attention.