There are people who are uncomfortable about the intrusions of various websites, but who use those websites anyway. These people "just" need a better alternative to switch.

But I have no idea what to do about the people who just don't care.

For example, OKC recommended a person to me recently.

EDIT: Redacted a bit more.

She lists her blackberry pin; her facebook account; an email address; her cell / mobile phone number; and her twitter account.

That's enough information to find her profiles on a wide range of websites.