I used to work for Road Runner... (Score 2, Informative)

Road Runner spent lots of time and money developing software to monitor user usage. It was possible not only to measure bandwidth usage (bytes in/bytes out), but to log IP addresses and ports. There was one problem, though: Road Runner's affiliates (e. g., Time Warner Cable) were more or less autonomous, and set their own policies and had their own agendas. So as far as I know, RR has never used these tools. There was much talk at RR of "abusers", yet, when you asked people there who used this term the difference between an "abuser" and a "customer", invariable they didn't have a clue. I'd say about 1% of RR customers used 50% or more of his available bandwidth. Anyone care to share their experiences with RR? In general I found them very professional and competent, but each department was almost completely autonomous and there was very little interdepartmental cooperation (with the possible exception of 2001 when AOL was threatening to swallow RR whole).