Adblock
The other day I was exploring on the Firefox website to see what extensions were available and, to my surprise, there was one called Adblock that looked promising. I installed it and have been amazed ever since. All of those annoying ads on CNN, Fox News, NY Times, and other places people tend to visit can just go away. Adblock does filtering based on URLs and can accept wildcards. As a result, if you right-click on an ad and select Adblock Image you can edit a URL that Adblock will use to filter any future images. You can even have a URL filter like http://*.adclick.net/ which will stop anything from the adclick.net domain from landing in your browser window or on your hard drive. I found that by hitting the major news websites and using some wildcarded URL filters I now can load web pages all over the place and not get ones littered with advertisements. Flash doesn't get Adblocked, but I've heard about something called Flashblock that I plan to try out soon.
If you don't have Firefox, you should get it. And then get Adblock -- both have actually made the Web useable again for me. While you're at it, there's another Firefox extension that will allow you to load a URL in Internet Explorer for those few pages that don't work properly without ActiveX controls. The only one to-date I know of is the McAfee update site -- they use ActiveX controls to dowload and update their virus scanner, firewall, and anti spyware products.
