"toll free" would be clearer than "zero rated". Net neutrality is trickier though...
If you're on the Net Neutrality side then "toll free" obscures the downside even more thoroughly than "zero rated". So it's clearer... if you're facebook :)
Better terms aren't even really necessary (though they'd be nice). But at least some sort of explanation in the article of what exactly it is that we're discussing would be nice.
Sponsored content. Sponsor-free internet.
Did you even understand the frustration of OP's post? It's not the terms, it's the fact that the terms are stated with no context. If OP is frustrated about the assumption that everyone knows what terms like Zero Rating and Net Neutrality mean and wants some information about the issues, how could they reasonably suggest better terms?