Wow. Google’s Urs Hölzle has blogged that the company is ceasing development on Wave, the collaborative service which it introduced at its I|O conference last year. It may use some of the technologies in other products, and everything’s open source, so others might continue work in it. But the product which once seemed like Google’s most audacious (even arrogant) attempt to change the way the world shares information isn’t going to change the world.