BlockAD

BlockAD blocks ads inside Web pages and eliminates the time your computer spends showing you ads you didn't ask for--and don't want. BlockAD monitors requests made by the Web browser, and uses complex advertisement recognition algorithms to determine whether a Web request is an ad or a legitimate request. When BlockAD finds an advertisement, it determines the best course of action to keep your Web-surfing experience productive and enjoyable.

Requirements:

Windows 98/Me/NT/2000/XP/2003 Server, Microsoft .NET Framework 1.0 installed

Limitations:

75-ad per day trial