Just a little tidbit of information I saw on the web, and yes this is legit.
AT&T customers will now have to start paying an additional $10 for every 50Gb of bandwidth exceeding the 150Gb DSL monthly cap, and the 250Gb U-verse monthly cap. This all starts on May 2nd. Well Comcast will eventually start doing this maybe....who knows. I always either get close too, or pass my bandwitdh cap, but they always throttle my connection....It SUCKS!!!!
Here is the full story:
AT&T capping DSL and U-verse customers