Finally, somebody makes a decent popup ad killer. So far, this one has worked perfectly for me–it disallows automatic popups, but when I click a link that creates a popup, it allows it to appear. The really nice thing about the way it kills popups is that it preempts them, rather than allowing them to partially load before killing them–you never even see the popup window. I’ve only been using it for a couple of hours, but it appears to be the perfect popup killer.