In an email to customers, Verizon noted that it started a program where advertisers can target Verizon Online customers by physical address. The address will be masked to advertisers, but the idea is that pitches will be more relevant.
The program is opt-out so if the targeting is troubling you'll have to change your privacy settings.
Here's the letter, which includes a link to an opt-out option.
And here's the opt-out screen.