I think Twitter now is a social network, but from what I hear of ways they are planning on monetizing the site, it may lose that title.
We love birthdays, when's yours?
Will not be displayed on your profile. (Why do you need my birthday?)
Formspring requires all users to provide their real date of birth, but it is used for internal purposes only. This information will not be displayed on your profile, and its use is governed by the Formspring Privacy Policy
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