Perhaps Twitter should have created their own shortening service, or bought one out (they didn't actually acquire bitly did they?), if only to lessen the intensity of the complaints. It does make sense for them to want a single service, it simplifies things for them and their users. The problem with url shorteners is making your product stand out. Any stable scalable shortener is basically the same as any other. Tr.im's situation is unfortunate, but both logical and predictable.
