Is there any logic behind showing/hiding advertisements based on whether a user is a member of your site? I had someone design a new user interface for me, and I thought the ad placement may be a bit too aggressive. Initially there was an ad right under my banner, but I chose to remove it for now.
Would it make sense to show this ad only to visitors and hide it for existing members? I guess the trade-off is that visitors who are potential members may be turned-off by the aggressive placment of ads and never register at all.