formspring.me lets you create a form where your friends can ask you questions anonymously, the form can be easily shared with others, as formspring provides an easy vanity url to your form.
http://www.formspring.me/[username]
Just register yourself or login with your facebook account, create the form and share the link on your social network profiles. You can do it manually or formspring will do it for you, formspring can be easily integrated with Tumbler, Twitter, Blogger, Facebook. Configure your social accounts with formspring and easily share your answers with your friends.