This is great. I had an incident in Belize this year where I turned off airplane mode to connect to wifi on the boat I was on and my cellular radio auto-connected to Belize's local mobile carrier without me realizing (I had international roaming enabled on my account). My phone started syncing and updating apps in the background and within 2 minutes of passive usage I had amassed $270 in data charges. Only. 2. Minutes.
I plead my case when I got back to the states and they removed the charges without a thought (although I had to send in a written appeal). International data rates are ridiculous and it's nice to see a carrier acting rationally.