Agreed. I'm on a low-data-plus-throttling plan on AT&T's prepaid subsidiary Cricket. I was on their lowest-tier 200MB plan for $15, and if I went over by even 1KB, I was "conveniently" given another 200MB for $15, effectively doubling my data bill. Now, if I go over my limit, I can still get texts and emails while I'm out-and-about, but I can't visit tumblr. I much prefer that, especially if I hit my limit the day before my billing cycle restarts.
