Build a social network site (like Pinterest) only for people who are interested in fashion, top brands, what to wear, etc.
The architecture and user interface should be as easy to scale and functional as that of Pinterest or Facebook. However, instead of "boards," you have "Closets" or "Fashion Racks" Instead of "Pin" you have "Fab" for labeling something as fabulous, etc. Do you get it?
Site is free. Registration by e-mails and with Facebook, Twiller and/or Google+ connect
Social widgets: FB, Twitter, Pinterest. others
Each bidder should propose a technology for the application, DB/querying, object/logical caching, load balancing, etc. and explain why (ABSOLUTELY IMPORTANT! NO BID WILL BE ACCEPTED WITHOUT IT!)