While preparing my short presentation on the bob, bing and wide tests ( see bob or fob, wide or hide, bing or bong ) Twitter incurred two bongs.
The first was when I logged out and got this message.
The second was when trying to set up applications so that my websites Tweet to my business ids.
Actually, both of these are fobs not bongs. The site has failed to deliver basic operational behaviour.
But bongs are easier to detect; and more fun (from a twisted viewpoint)