???
I've never had them "cover my whole screen"...for the most part I don't even realize they are showing - I have so learned to overlook them. However, if they did cover the screen and interrupt my reading I, too, would be unhappy. An ad that gets annoying I write down and determine I will never purchase that product.
Just like in politics - if I get a phone call from a candidate I WILL NOT vote for him - even if originally I had been planning to.
I appreciate these 'free' forums and am more than willing to put up with a little inconvenience from advertising and a few rules that are seemingly irrelevant along with the necessary ones.
After saying alll that, If I get some pop-ups that are coving the page I'm trying to read I will also let the admin know I don't appreciate that particular ad. Ads that get too annoying hurt the site more than help it...a posting is no good if one cannot read it.
Just my