[3SidedSquare]

How do they know I'm peer2peering? I could be running a website from home for all they know, and encrypting usernames and passwords and the like.

[w00t]

p2p connections, especially things like torrents, are really easy to detect. You're sending out a few packets to 5+, usually domestic, IP addresses, and getting lots of data back, all on the same port.

[3SidedSquare]

Wat?
Sending out 5-ish packets and getting lots back can just be a rich web page/website. Serving domestic IP address can be explained again by hosting a website, all of it being on the same port... ask someone about end-to-end encryption like these guys

I'm still under the assumption that the system will be automated, which means only a small number of sites will be checked out, and if you have a legitimate excuse to have the traffic, they won't bother too much. Am I wrong?

[w00t]

p2p networks aren't using standard ports, for one. Second, sending out packets to 20 different IPs, domestic or not, and getting back a sum of hundreds, if not thousands, of MB isn't normal protocol behavior.

Your assumption is fine, what you, and most other people fail to recognize, is you don't have a right to your ISP's service. If they don't want to continue serving you, they aren't obliged to. They don't need to provide any reason at all, if they give you what you paid for, but choose to not continue serving you, it's within their rights to do so.

[Ultimatum]

P2P ARE NOT USING STANDARD PORTS. Packets will randomly scatter over many different IPs, which rarely happens to people accessing normal websites. Then receiving a reply of many million packets. Quiet easy to see that you aren't on Steam DLing your Black Ops 2 either, both use different ports and protocol.