I came across an interesting article today. A senator (Sen. Paul Wellstone, D-Minn.) urged other Senators to cosign a letter to the FCC. In support of a new Opt-In privacy standard. From what I understood, this would, by default, do what Opt-Out does. So you would not have to call the phone company, and say that you Opt-Out. And want your information kept private.
Under an opt-in standard, phone companies must obtain permission from customers before sharing or selling their CPNI data. Under an opt-out standard - the alternative to an opt-in approach - phone companies would be free to sell CPNI data unless they received a specific request from a customer to desist.
You can read the article here: http://www.newsbytes.com/news/02/175307.html

It is nice to see Senators trying to help privacy. Especially in this post-9.11 era.