[jebblue]

It has not been proven that Comcast has the authority to do this:

https://www.techdirt.com/articles/20141208/13222529362/comca...

It has been proven that in many places at least in the US, it is illegal and in some cases is a felony.

Edit: Further, it is not a good idea to connect to any known SSID unless you know for a fact that it can be trusted:

http://arstechnica.com/security/2014/06/free-wi-fi-from-xfin...

Your neighbor might be hacking you while you think you are legally using their hardware.

[tedunangst]

What is a felony? Using Comcast?

[jebblue]

Using Comcast with your own equipment and none owned by any one else outside your home? I'm not a lawyer.

Anything else including what the author describes, using his neighbor's equipment without their permission even if he thinks Comcast has the legal authority to authorize it (and documentation in the links I provided challenges that notion) then it's not for me to say; I'm not a lawyer.