True BitCoins are very volatile at the moment... But the only reason you think USD is stable is because you are inside the USA. All currencies are very volatile. The big point you are missing is that a currency is worth what people will sell for it as much as an item is worth what people will pay for it.
Git Annex ( http://git-annex.branchable.com/ ) is awesome at doing it's syncing when it's possible and has a somewhat nice web UI over great CLI tools. It can also do encrypted backups which may be important if you don't fully trust your neighbour.
I find it amusing that Google has a good reputation for code quality and Microsoft is perhaps questionable, yet their founders have the opposite reputation.
This needless display system might put the fledgling Linux gaming industry on the back foot. Games need good drivers quite often. Steam only runs on Ubuntu (officially) and this silly bullying may cause them much more harm then the benefits they may get (and what are they after all!)
I don't think they can make them big, at least not cheaply and big.
Simulators (GTR/iRacing etc) might very well do, in a car without ABS I managed to get round a corner of black ice without an issue, as I knew what to do past the level of grip, to regain it, while the car infront went into a ditch, funny really (nobody was hurt) as I was the early 20's driver and the other guy was very middle age.
If I were holding a gun in real life, I'd want something better than mixed reactions, I want reactions of a 12yr old FPS player!
But 75 seems excessive to prove a point, particularly for test questions, that's getting on for 10% of the score. The fuzziness would end you up in a situation arguing that that amount is fair use. If you had an article and had 3 or 4, I would say it'd be pretty clear cut.
Anybody seen those huge mechanized billboards on NASCAR (or the French F1 race) used to advertise the network. They aint there either.