Yes, a good read regarding Firefox. But IMO it's no sweat for any Firefox running with the No-Script extension. It's a must-have. Gives you control of what sites' javascripts are allowed.
Ah, now it seems it's all a hoax regarding Firefox vulnerability.....
Regardless, it's best to run No-Script when tip-toeing into unknown websites.
And use a free proxy server too, to stay anonymous.