Downloaded items shows up on the notification bar on the first time. Clicking on it will open it. Or if you cant find the File Manager on a Android phone and browse the /Downloads folder, you shouldn't be using a smartphone at all.
Retina display huh? Retina is just another marketing word. Apple's retina display was surpassed by consumer technology more than a year ago. GS4 has a 441ppi screen while the Iphone 5 "Retina" display is just 326ppi.
I don't see how this is annoying and adding 3px is going to "make the difference in the world" Look at the authors blog. see how much space between the header and the "<Back to blog" and the content. Fix yours first. Its actually annoying than this
Yes this argument is becoming true with time because ARM is really gaining phase. But we have Virtualization and its already cheap and works best at the moment. I dont see why anyone should go for separate ARM server ( in normal scenarios of course ) instead of using virtualization
Facebook has their own infrastructure and very well capable of hosting their own. And of course deleting the videos isn't a smart idea