I have found an extension for Firefox that I like a lot.
It is called Anonymouser 0.3.1.
Once installed, just right click a link (must be an http:// type link, does not work with ftp, https, etc.), select “Open with Anonymouser” or “Open with Anonymouser in New Tab”, to open anonymously through anonymouse.org.
You can also go directly to anonymouse.org, if you would rather not install the extension or if you do not use Firefox.
Either way anonymouse is great to use if don’t want the sites you are using to have access to your personal information.
I used to use another anonymising site, but got annoyed with all the hoops I had to jump through to use it.
Anonymouser does have advertisements but, as I also use the Adblock v5 extension in Firefox so I don’t see them.
As with any unfamiliar software, don’t just take my word for it, check it out, Google it, check it out in Usenet groups, etc.