Been seeing all the "warnings" for the newest Firefox ClickJack exploit... absolutely amazing. A shame the creative efforts involved aren't properly redirected towards better ends. {Sigh} Oh well.
I played with the proof-of-concept page... it's done through flash... gee, how novel.
Pundits report that to prevent being "clickjacked", you need to either use the 'noscript' extension, disable flash, javascript and your brain, or use lynx, a text only browser usually found on linux systems.
I found that 'flashblock', an extension I use on all my systems, thwarts it very well. If the flash can't execute, it can't do bad things. Since I use it already, it's not something else to install and slow down things with. Besides, it's been reported on CNN and MSNBC websites... why would I go to THOSE places?
My advice? Install 'flashblock' for firefox, don't visit questionable websites. Pretty simple. Oh yeah, and try to avoid the herd mentality.