Has anyone here toyed with the idea of using CSS or Javascript to eliminate, hide or disable certain ad containers? I haven't really had time to develope the idea but here is a simple example of a filter to disable iframes. It will disable them by hiding the iframe and by not allocating room for the iframe to be rendered. In other words - no obvious blank spaces. With this filter you can eliminate any filters that delete or replace iframes but you will need to maintain an up to date hosts file because the content of the iframe is still loaded even though it isn't being displayed.
Name = "IFRAME Hider"
Active = TRUE
Limit = 7
Match = "</head>"
Replace = "<style>
"
"IFRAME {display: none;}
"
"</style>
"
"</head>
"
I've not widely tested this filter but it has worked as expected at sites with known iframes. AFAIK no other browsers besides IE support iframes so if you don't use IE you don't need it.