Do you oversell bandwidth?
Since he sells unlimited bandwidth and probably doesn't actually have unlimited bandwidth ...
Of course, everyone oversells bandwidth.
Well sort of, it is possible to sell unlimited bandwidth if you have enough capacity at a fixed rate to sustain it. In Australia you can get unlimited bandwidth but you'll be capped at a set speed. 1Mbit of bandwidth in Australia realistically costs ~200-300/month. It's unlimited but it isn't oversold (cause you can't do more than 1Mbit).
Stu
'unlimited' is an industry-wide lie.