What is Net Neutrality?

Wikipedia: a principle that is applied to residential broadband networks, and potentially to all networks. Precise definitions vary, but a broadband network free of restrictions on the kinds of equipment that may be attached and the modes of communication allowed, and where communication was not unreasonably degraded by other communication streams would be considered neutral by most observers

Google( pro internet neutrality): the principle that internet users should be in control of what content they view and what applications they use on the internet

SavetheInternet.com(pro-internet neutrality):  the guiding principle that preserves the free and open internet...means no discrimination. Net Neutrality prevents Internet providers from speeding up or slowing down Web content based on its source, ownership or destination.

Hands Off the Internet (anti-net neutrality) does not explicitly define net neutrality in the context of the debate over new legislation. Instead they give the FCCs four current principles of net neutrality in 2005, which they support.