I had just mentioned in a post the other day how glad I was that most US internet providers dont charge per usage. Although this will remain true for the near future, major providers are starting to put limitations on monthly download totals. Should make for some hassles.
AT&T Basic (DSL only) Up-to 768 Kbps 20 GB per month
AT&T Express Up-to 1.5 Mbps 40 GB per month
AT&T Pro Up-to 3.0 Mbps 60 GB per month
AT&T Elite Up-to 6.0 Mbps 80 GB per month
AT&T Max (U-verse only) Up-to 10.0 Mbps 150 GB per month
- "XBL2009",
http://www.dslreports.com/forum/r21378794-"Broadband Caps Coming to AT&T"
http://www.pcworld.com/article/153312/broadband_caps_coming_to_atandt.html