@ Necronomnomnomicon - Re: Why does there have to be an app for that?
I see your point from the performance side, code running straight on the local metal is in most cases much faster. But loads of 'website'-apps don't process anything, nor do they need to. A Twitter-app reads html and fills it into a local form and then sends a put with the input back to Twitter. Not really taxing.
It's not the Flashy games I'm wondering about, it's all these 'pass a text file' apps that no one seems to manage without. Even the Windows Phone store has something like 20 facebook apps.
Maybe I'm missing something?