Another hole is about to be filled in Twitter’s product features. CEO Evan Williams just confirmed plans to launch its own link shortener on stage during the final Q&A session at Chirp. HE noted that it would be “stupid” not to add native link-shortening capabilities into Twitter, since most Twitter clients already have that feature. “We want to solve that problem,” he said. “Everyone else has solved that problem. We are probably not going to give people a choice. If they want to use a different shortener, they can use a different app.”