Remember the days before Facebook's iOS app ditched HTML 5 and sped things up with some native code? Relying on HTML 5 for the app is "one of the biggest mistakes if not the biggest strategic mistakes we've ever made," Mark Zuckerberg said in an interview at TechCrunch Disrupt today. DevelopingFiled under: InternetZuckerberg: betting on HTML 5 for Facebook mobile app was a 'mistake,' Android