Getting Involved with mozilla.org
If you're using Internet Explorer, you've got holes. Most are known. Some are not. Chances are, you haven't patched the ones that are known about.
Check out Mozilla. Give it a chance. Check out Firebird, which I still call Pheonix. Firebird is a cleaner, faster version of the Mozilla browser, which is already clean and fast.
I'm actually testing out the "Blog This" extention I've added to Firebird. From now on when I'm at a site I'd like to Blog about, I just have to right click.