Remember when Mark Zuckerberg blamed the problematic old Facebook mobile app--dubbed "freakishly slow" by some--on "betting too much on HTML 5?" So does backend-as-a-service (BAAS) provider Sencha, and to rebut Zuckerberg's assertion that using HTML5 was "one of [Facebook's] biggest mistakes," Sencha built its own mobile webapp, Fastbook, to demonstrate that HTML5 is ready for prime time.
Facebook is pitching its Off-Facebook Activity feature as the solution to its crushed reputation over transparency and lack of user data control. But, two major questions remain. Will the feature be enough for Facebook critics? Second, what impact will the feature have on the developer community?