Skype: The highly disruptive killer PDA app Summary: For years, I couldn't decide whether or not to buy a PDA. By George Ou for Between the Lines | September 21, 2004 -- 18:28 GMT (11:28 PDT) For years, I couldn't decide whether or not to buy a PDA. Topic: Mobility Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.