Comment It's easy to block these... (Score 1) 653
..if they are simply spawning windows that are opening new URLs. CasaleMedia and YieldManager are notorious for this.
But all you need do is run a URL blocking program or extension (we love LeechBlock extension for Firefox) and plug in their domains. Here are two articles on how we do this:
http://www.theinternetpatrol.com/companies-that-end-run-pop-up-blocking-to-shove-their-advertising-down-your-throat-and-how-to-stop-them
http://www.theinternetpatrol.com/new-free-pop-up-blocker-for-a-new-breed-of-pop-ups