Yeah, I saw that when it first came out too.
G.C.H.E.E.S.E. all the way!!!
Edit: I just discovered that the "no more than one post every 30 seconds" rule can be circumvented. Submit your post, and once it gives you the message, submit it again right away. I guess it's a bug which doesn't check again once it gives you the message, because it assumes you already waited 30 sec. 🙂