Over at The Register, Tim Richardson reports some interesting broadband penetration numbers. There are 20 million broadband lines in the US. Don't know what that translates to in terms of households or users, but that's a nontrivial (but small) number. And there's double digit growth in both DSL and cable.
He also relays that the ITU is claiming one in ten Net users worldwide has broadband. Again, small but non-trivial.