Simple Facebook-type Wall With Two Columns

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.