Facebook is very far from an "open forum". You can't even view posts without creating an account. The service is useless if your entire social graph isn't also

Facebook is very far from an "open forum". You can't even view posts without creating an account. The service is useless if your entire social graph isn't also over there. Content you post is heavily moderated, both automatically and by paid humans. There's a reason there's no Java discussion happening there.