Just a friendly reminder to all of our readers who use AT&T for their broadband: your cap comes into effect today (much to our chagrin). DSL users will be capped at 150GB and U-Verse users get 250GB. After you hit your cap you'll be charged an additional $10 for every 50GB used. One of the easiest ways to rack up your bandwidth usage is streaming music and video, so be especially concious if you use Netflix or Hulu to stream video to your TV or computer.
For full details on AT&T's new terms of service, check out Josh's blog here.