We talk about warnings in the post. We'll do that at some point. The hard part about caps is what to do when someone hits them.

If there was a way to make caps work for our core customers, we'd do it. We're open to ideas. A theme of our work this past month and these next several months is extracting maximal value from ANFWWAONW, our new billing system. The thing you have to remember though is that our belief about our core customer is that they are averse to nothing more fiercely than service disruption.

We're not in principle opposed to caps. We just don't have a product story for them that we're comfortable with. Keeping you from spending more money than you wanted to is an explicit product goal of ours (again: see post); we're just very wary of trading availability off against that goal.