Desperately needs an "About" page which gives some indication of who's behind this, what the plans for it are re. funding, and why it was created. Basically, you need to give people some sense that this will stay around and continue to operate under terms people are willing to live with before they will spend a lot of time adding content.

Also, if this takes off, I hope you are ready for the scammers and spammers who will want to take advantage of it.