You're also screwed if you have WiFi Protected Setup enabled (Its enabled by default in most routers). Once can easily crack a WPA2 passphrase easily in a few hours using a tool like reaver.
Here's what I'd like to see - A Todo app, calendar and goal tracker all rolled in one, with a clean UI and multi-platform sync. That's all the productivity I need!
Also, another vote for CSS. Mostly because its so hard to debug and figure out what exactly is making your page look like shit. Add to that varying browser support. Its hell.
Never for programming related stuff. The only Facebook product I use is the messenger app on android which sort of doubles as chat. Everything else is a timesink.
I worked on a basic implementation of these APIs for firefox last summer (as part of a Summer of Code project). From what I hear, its going to take a while before you see it in Firefox.