Hi, Facebook Aplication: 1. An aplication that allows users to sign up (first for free, later for payment). The user is given an unique, randomly chosen 6 digit number and letter code. 2. Users who have signed up with our aplication get to chose what content of their profile they want to show to people whenever a guest enters the 6 digit code in the search box of Facebook 3. Users whould be able to restrict people based on the network they are in to see their profile chosen in step 2. 4....