[setishock]

Originally Posted by Zachery

couldn't you just use a notice?

You could use the conditionals in an ad also to do the same thing. Problem with any method you use is the target member(s) have to be logged in. If you have those JA's that sign up just to say they belong to this and that forum, odds are you'll never see them again. Plus the flogging your DB's gonna get checking to see if the logged in member(s) meets the criteria of seeing the message especially if you have a large member base.
Checking for 0 posters is like spammers, nature of the beast and a PITA.
Might be prudent to post a policy that states after x amount of days and 0 posts your account will be deleted. And add that to the new registration and force an acknowledgement. After say 45 days you go to the ACP, pull up the 0 posters and deleted them.