I was discussing with a client today about this, and realized I still had not blogged about this yet. Facebook has launched Developer Accounts. Now, no longer do developers have an excuse for errors on their pages, or sites going down because they are working on their production Facebook app, which is their only development environment to work in. Also, no longer do developers have to risk all their work deleted because they opened up a mock Facebook account and Facebook decided to kill it because it wasn’t a real person. I strongly suggest you start using this if you are a Facebook developer.