FastBook is an interesting project made by Sencha
to basically prove that Facebook’s switch to Native applications on Android
might have not been the right way to go.

Zuckerberg made a statement a few months ago (September), saying
“Our Biggest Mistake Was Was Betting Too Much On HTML5”.
I find it interesting that not so long after paying a Billion Dollars
for a service like Instagram, Zuckerberg is focusing on
the so-called limitations of HTML5.

For some reason, instead of tackling the problem head on, and understanding
that for future’s sake HTML5 would probably be a better bet than native applications
(mainly because HTML5 specification is more solid than Android / iOS versions),
Facebook chooses safety over Innovation.