Facebook ad for Anonymous Social Media site

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This customer received 11 graphic designs from 7 designers. They chose this graphic design from DaVinci Design as the winning design.
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We need an ad to post on Facebook to promote our anonymous social media site called Social Number (www.socialnumber.com) where you are just a number. It allows you to do everything you do on Facebook, LinkedIn, Quora, Instagram etc. except that you are anonymous. On the site you are just a number which is your only identity. So you can post an expression (simliar to FB status update), create or join a group and join the conversation (like LinkedIn), connect to other people who have similar interests, etc.
We would like to see a design that depicts anonymity, privacy, and fun. It should show that it's the only site where you can express yourself freely and take people to socialnumber.com. Colors and design concepts should align with the website.
Updates
Project Deadline Extended
Added Tuesday, November 19, 2013
Industry/Entity Type
Graphic Design