Net Neutrality - for the Love of God, Will Someone Help Me Understand It?

I've been reading about this for some time, from both sides of the issue. Many Libertarians are heavily in favor of it, saying that it's the only way to keep government from censoring opinions.

Others point out that the concept will force internet providers to provide service to those data-hogging activities, such as video-streaming, which will mean that most of us will find that their Internet activities will slow to a crawl.

Will someone with some knowledge of this issue please point me to sites that can make a fair case for their side, without a lot of propagandizing? Post those links in the comments, please.