1. Email/Password Sign up + Sign In
2. Sign Up as either "Regular User" or "Philosopher"
3. 1st Column: Facebook-type Wall (with text input field on top and posts downwards)
4. 2nd Column: Input text field + Meta-comments for each post in 1st column
5. Rule: Posts won't be displayed to the world in 1st column until a meta-comment has been created for it by a philosopher in the text input field of the 2nd column.