Twitter has been using TinyURL for its own URL shortening needs. Up until now, that is. As several sites have noticed, Twitter has silently replaced TinyURL with bit.ly. TechCrunch doesn’t find that very surprising, naming Betaworks as common ground for both bit.ly and now Twitter-owned Summize.
Will Twitter buy bit.ly next? They should, the fact that they’ve been relying on external infrastructure for their URL shortening needs this long is surprising.