How many of you are aware of the 5 GB cap that Frontier DSL has imposed?  Or of the trials in Beaumont, TX that Time-Warner Cable is running?  It’s only a matter of time before others impose caps.  And here we are, with a big ISP imposing a cap.  But really, let’s be honest: this ISP already had one, just one that was hidden.Today Comcast detailed its new “network management” policies.  Basically, they set a 250 GB cap on users, effective October first.  It should be noted that