If you are worried about your privacy and would like to browse the internet anonymously then you should consider using Tor in conjunction with Firefox. This great software includes a router and privoxy (a proxy server) which can mask user IP affording you to browse the web safely and anonymously. Foxtor and torbutton Firefox extensions allow you to enable and disable tor and privoxy from within the Firefox browser.

here's how you install all three
1. Download and install tor from this link.
2. Download and install either Foxtor or Torbutton.
3. Start tor from the system tray
4. Click on the foxtor or torbutton icon to toggle anonymous browsing.
keep in mind that you should not use tor with BitTorrent or other P2P software to download illegal software.
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