I've been with Comcast for years -- and am quite sure that they don't know or care how many computers you connect (via a router) to the cable modem. They're charging you for bandwidth on the WAN, and the bandwidth available to you is independent of how many computers share the cable modem connection.
...you pay for what you get,
LK
Although the bandwidth/sharing thing is correct in principle......they DO care how many devices you connect. I just recently get ComCast service, and chose the
self-install option, since my house already had CableTV. When I went to pick up the Modem from the local office, the lady specifically asked me how many computers or other devices I would be connecting.....
When I said "1", she gave me a dirty look, as is she did not believe me, and started in on a sales pitch about how the existing line into my house may need "upgrading" to support both TV & net, and if that was the case, a svc tech would have to come out & do a bunch of stuff.......all at my expense of course.....
Being hip to their slip, I jokingly said, "well let me try things like they are & if I need help, I'll call you"
And get this.......less than 30 minutes after I was up & running, someone from the office called me & wanted to know if I
still needed a tech to come out... of course, I said NO! Then, 10 minutes after that, a tech was at my door anyway trying to barge his way in to see what kind of set-up I had. I just jokingly said, well I have a Mac, & they are REALLY easy to set up, so NO, I dont need your help! He also gave me a dirty look, but grudgingly went away after realizing I was not gonna let him in
Of course, I now have my wireless/VOIP router connected as well as my desktop, so bump the cable company!