Verizon is apparently going to be sharing data about your calling habits with other companies, and may or may not have contacted you to give you the opportunity to opt-out:

http://yro.slashdot.org/yro/07/10/14/1844209.shtml

I actually found this literally right after I had called Verizon to cancel our service (for unrelated reasons). Nevertheless I've called their number to opt-out.

[insert seething screed on the lack of ethics implied by the use of such opt-out arrangements]