Ads should not count towards the cap. That would be very very unfair.
Caps are a bad idea, because 90% of the stuff we get is stuff we don't want.
Ads are not going to push you over a 250 GB cap. So please. If you don't like a site with ads then stop going there. They provide you acces for FREE the least you can do is put up with ads. mos tads even flash ads are under 100 KB even if they averaged 1 MB it would take 1000 to equal a GB
You totally miss the point; if COMCAST is going to insist on caps then they will have to take the good with the bad. You can bet there will be class action over this one.
Your comment about whether it will or will not push someone over their cap is IRRELEVANT..it still adds to the cap that someone has very little control over.