What an excellent web browser! Firefox includes features to block spyware and pop-up ads, comes with an integrated search bar which allows you to search many different sites (including Google, Yahoo, and Amazon.com), and lets you download different Themes to change its look. It also lets you install Extensions such as Forcastfox, StumbleUpon, and Adblock. These Extensions appear on the toolbars of the browser and let you see and do various things.
Of the extensions I downloaded, I liked Adblock and StumbleUpon the most. Adblock lets you get rid of annoying ads on various web pages by simply right-clicking (you hold the mouse button down or Ctrl-click on a Mac) on it and choosing "Adblock Image" from the pop-up menu. The ad simply disappears and never reappears with the same link again (you can also Adblock iframes). If the ad is a Flash movie, the pop-up menu doesn't work and instead you click on a small tab above or below the movie to block it. You can also block entire sites from sending ads (such as ad.doubleclick.net) so that you never get ads from them.
StumbleUpon is like channel-surfing for the web. You click a button and it sends you to a site that, based on your interests, you should like. Most of the time you do like it, and, if so, you click "I like it" on the toolbar (if you don't like it you click "Not-for-me"). You can also write comments on the site.
The ONLY thing I didn't like about Firefox was that when viewing java applets it often froze, but this may just be my computer acting up.
Firefox, as well as all of the Extensions and Themes, are FREE. Firefox is available for download HERE.
(out of 6)