This Public Knowledge whitepaper on data caps is available as a PDF.
A special note to all the unpaid family tech support specialists out there …
For years you have been giving advice to your family about what technology to buy and what technology to skip. You have told them that when they are buying a laptop it is worth paying for extra RAM, but that the base hard drive will be fine for holding their holiday photos. You have told them that the five dollar HDMI cable is just as good as the 100 dollar one. You have told them that more megapixels does not always mean a better camera.