Register to create your own profile.

Fill it with any personal information, including the avatar.
(if you want to remain anonymous, you do not give anything)

Address your profile give your friends, and they will be able to anonymously and without registering interesting or embarrassing to ask questions that normally would not want to move.

Answer the questions anonymously and let your loved ones to discover.

Remember that you will never know who added the question, unless it decides otherwise inflicting...