Lifehacker comes through with one of the simplest and easy to understand guides on Net Neutrality I've seen to date. With it becoming a hot issue for the US government, it's well worth your while to take a look at it now.
"We've dropped the net neutrality term around here a few times, but you may not entirely understand what it's all about. Here's a primer on what net neutrality is, how it might affect you, and what you can do about it."
You can find more in-depth information at Real Net Neutrality.
