#4. TechPresident.com

For the first time in a presidential election the Internet is playing a central role in deciding who will become the next leader of the United States. TechPresident.com, started by editors at the Personal Democracy Forum, covers how the campaigns are playing out in cyberspace and how user-generated content created by activists affects the popularity of the candidates. The site's blog tracks everything from Web advertising and email lists to postings on YouTube and campaign websites. You can even use the site to compare how many friends the candidates have on MySpace and Facebook.