Personally I know you have NO control over this since this site is now owned and operated by the ads that pay you but I have to say the pop up ads that appear so often are VERY annoying. Seems I'm always searching for that #$!#@ small x close button, and if I miss it even slightly, I'm directed to their website anyway (By design I'm sure). Just throwing it out there, like you care, which you don't.
I am aware of the expanding ads. They are supposed to appear just once per day, per user.
I agree they can be cumbersome and I wish I didn't have to run them. In addition, I truly wish they didn't have to appear to long-time forum members, I just don't have a way to block them at that level.
I've also noticed the crafty methods the advertisers are using to close them. One trick to clear them is to reload (refresh) the page from your browser. Also if you hold the shift key while hitting reload that forces a full page refresh (bypassing your internal cache). I understand this is neither ideal or user friendly, but wanted to pass along a work-around.
Also, whenever we can get higher paying ads that don't expand we show those when available.
try changing the web site and not waste space along the sides so much. giving the ads a place to appear on the left would help out too . that way they do not interfer in the text as much.
In practice, the ads are not too intrusive. I have seen worse. The idiots that keep on coming back under new names are more intrusive and annoying and ARE hurting your site.