http://www.google.com/tools/firefox/saf ... index.html
Google Safe Browsing is an extension to Firefox that alerts you if a web page that you visit appears to be asking for your personal or financial information under false pretences

Blogger Web Comments
http://www.google.com/tools/firefox/web ... index.html
Blogger Web Comments for Firefox is an extension that makes it easy to see what bloggers are saying about a page you're viewing in Firefox and even make your own blog post about it, all without leaving the page you're on.

There is already an article up on oreillynet.com about possible problems with the safe browsing extention.
Now for the discussion, Google is currently worth about 125 billion, with current stock at $425.40 per a share. Microsoft is at $26.97 per a share and is worth $287 billion. Now there are people already predicting that Google will pass $500 per a share in 2006, it's not unlikely that Google will eventually be worth more then 200 billion, maybe someday they will surpass Microsoft.
However, I cannot imagine that Google can maintain this wealth. This is a company that provides almost no retail products, everything they offer is nearly free. I have a feeling that their stock will eventually plummet. Unless they do something big and actually sell it, like an operating system. Also with Firefox growing and people using extensions (like Adblock), I have a feeling a large group of people have learned to block Ad Sense and advertisement in general. This is slowly chipping away at Google. What do you guys think?