Matt has a host of info on the players involved, and the what's at stake, as well as how you can get involved, starting at SaveTheInternet.com. It certainly appears that all users and the many voices of opinon on the internet are bringing tremendous attention.
On their site, details emerge like this:
"Internet Freedom is under attack. Congress is pushing a law that would abandon Network Neutrality, the Internet's First Amendment. Network neutrality prevents companies like AT&T, Verizon and Comcast from deciding which Web sites work best for you -- based on what site pays them the most. Your local library shouldn’t have to outbid Barnes & Noble for the right to have its Web site open quickly on your computer.
Net Neutrality allows everyone to compete on a level playing field and is the reason that the Internet is a force for economic innovation, civic participation and free speech. If the public doesn't speak up now, Congress will cave to a multi-million dollar lobbying campaign by telephone and cable companies that want to decide what you do, where you go, and what you watch online."