As with all innovation the direction we innovate is a combination of what is technically possible and what is socially desirable. Technological developments determine the possibilities, but our needs determine which technology will actually break through and remain a facet of our life. Morse code, Telex, Fax, iMode, WAP and ICQ have all been replaced by better and easier-to-use tools. Communicating with random strangers through Chatroulette didn’t quite make it, but who knows what will happen with Airtime.