Yeah, they did it to me. No, they didn’t ask me:
Two East Bay residents are suing Comcast for plugging their home’s wireless router into what they call a power-wasting, Internet-clogging, privacy threatening network of public Wi-Fi hotspots.
The class-action suit, filed last week in U.S. District Court in San Francisco on behalf of Toyer Grear and daughter Joycelyn Harris, claims Comcast is “exploiting them for profit” by using their Pittsburg home’s router as part of a nationwide network of public hotspots.
Comcast is trying to compete with major cell phone carriers by creating a public Xfinity WiFi Hotspot network in 19 of the country’s largest cities. The company is activating a second high-speed Internet channel broadcast from newer-model wireless gateway modems that residential customers lease from the company. It plans to spread to 8 million hotspots by the end of the year.
[…] Although Comcast has said its subscribers have the right to disable the secondary signal, the suit claims the company turns the service on without permission and places “the costs of its national Wi-Fi network onto its customers.”
“Comcast’s contract with its customers is so vague that it is unclear as to whether Comcast even addresses this practice at all, much less adequately enough to be said to have obtained its customers’ authorization of this practice,” the suit claims.
The suit quotes a test conducted by Philadelphia networking technology company Speedify that concluded the secondary Internet channel will eventually push “tens of millions of dollars per month of the electricity bills needed to run their nationwide public Wi-Fi network onto consumers.”
Tests showed that under heavy use, the secondary channel adds 30 to 40 percent more costs to a customer’s electricity bill than the modem itself, the suit said.

Jeez, is this the ‘new’ modem Comcast has been pushing?
Yep. The one I have.