In a development with potentially huge implications for digital marketing and consumer privacy, numerous Internet service providers have begun using or testing technologies that track their subscribers’ online activities and serve ads based on those behaviors.
The trend is part of an ongoing bid by ISPs to hang ten on the digital advertising tsunami that’s largely passed them by while stuffing the pockets of Web giants like Google, Yahoo, AOL, and Microsoft.
https://www.clickz.com/isps-collect-user-data-for-behavioral-ad-targeting/65405/