Fun with Firefox

I'm having plenty of good clean geek fun going through Firefox Extensions. Really cool, with lots of potential is the stumbleupon extension. I went to a half dozen sites that I like a lot, told it that I like them a lot, and now it is already coming up with suggested sites that pretty much killed my whole evening. I'm sure the spammers will find a way to pollute this, but for now it's a great tool to wade through all the BS on the net and discover new things.