BlogExplosion and popup windows

Once again, I got a popup window while surfing on BlogExplosion. The "Block popup windows" option in FireFox is also being disabled by the same javascript that launches the popup window.

I have reported the problem to BlogExplosion. Of course, when you go back to the same blog, the popup doesn't come up again, making it difficult to trace. I have some suspicions as to what's causing it...

I've added the domain from whence it came to my hosts file to attempt to block it