"The biggest cable and telephone companies would like to charge money for smooth access to Web sites, speed to run applications, and permission to plug in devices. These network giants believe they should be able to charge Web site operators, application providers and device manufacturers for the right to use the network. Those who don't make a deal and pay up will experience discrimination: Their sites won't load as quickly, and their applications and devices won't work as well. Without legal protection, consumers could find that a network operator has blocked the Web site of a competitor, or slowed it down so much that it's unusable."
from savetheinternet.com