One of Comcast's main defenses of their BitTorrent blocking is to make sure the network isn't congested for other users during peak hours. This study done by the Max Planck Institute in Germany calls BS on that excuse by pointing out the fact that Comcast blocks torrents 24 hours a day, not just during peak hours. Not only that, they block every single day of the week as well, making sure that your uploads are minimal at best, killing your ratios on torrent sites. It's definitely not surgical blocking as they told us before.
I switched from Comcast to RCN 6 years ago, after having used Comcast for 1 year at which point they sent me a letter threatening me about my internet usage; how I was using more bandwidth than 95% of all other users.
"But you advertised 'unlimited' internet use" said I.
"Well, we reserve the right the limit excess use" said them.
"Then tell me what the cap is; and how much I'm exceeding it"
But they didn't tell me; there wasn't a "cap." They wanted me to "bring it down about 20%"
I was like "You don't make sense; I quit".
Switched to RCN, never looked back. 20Mbps down/2Mbps up, and I get pretty much what they advertise. I won't switch from them till FiOS become available.