[tedks]

Um, how is this relevant?

IANAL, but the DMCA seems to protect you from liability only if you don't examine and modify traffic. If they're looking at the protocol to see if it's HTTP and therefore modifiable, they could look at the host to see if it's going to the pirate bay and block it. This means that when someone goes to the pirate bay on the Verizon Wireless network, Verizon is liable for their actions under the DMCA.

This is like YouTube reviewing videos before they're uploaded. If they were reviewing videos, they could catch copyright violations from the start and thus should.

There's probably legal trickery they could use to get out of it but it seems like a valid point.