Is Comcast Intercepting Packets?

nihilist_1137 writes: "According this page, comcast is intercepting your packets to gain knowledge of your whereabouts and then reselling it to marketers." According to the linked message, "This allows them to not only log all http requests, but to also log the response. Maybe they want to profile their customer browsing history for subsidiaries or resale to marketers. Maybe they want to do their part in The War on Freedom. Maybe they just want passwords to porn sites. Apparently they aren't using it to maximize bandwidth, because it's not configured to serve cached data."