Leftist 101: If you don't agree with us, you're racist/sexist/homophobic. If you support someone else who doesn't agree with us, you're racist/sexist/homophobic by association.
That's usually what the first line of argument from the left boils down to. Not always, but certainly more often than not.
Let's see... apartment complexes that run their own internet service (like mine), dormitories, employers... There's a lot more subnetting & NAT than you might think, resulting in quite a few situations where there could be multiple users per external IP.
