I'm glad they are _finally_ solving the multiple desktop issue, its definitely the most frustrating aspect of OSX. Also, loved how it worked with AppleTV.
The apple tv desktop extension is something apple was way behind on. AirParrot has had that for 1.5 years. http://www.airparrot.com
*disclaimer: I'm a former employee of AirSquirrels the maker of AirParrot. I have no real interest in making them money other than I have some friends that still work there. :)
With regards to the last point - privacy from your identity provider -- isn't that somewhat moot for most sites as they have those facebook/twitter/google+/etc share/like/plus icons that report back anyways.
But a compromised credit card doesn't mean you risk your whole bank account. First, at least in the US, there are limits to what you are liable if you are card is compromised -- report within 48 hours, the limit is $50, report within 60 days, the limit is $500. Second, credit cards have a credit limit -- so, worst case scenario, you'd be out to whatever your limit is (which is unlikely to happen as any weird use of your card would probably trigger it for a security review, which wouldn't allow any transactions until someone talks to you). Finally, credit cards (unlike debit cards), are not linked to your bank account.
Compromised credit card adds significant hassle while Bitcoin transaction adds zero hassle. So CC is worse than Bitcoin for both parties: merchant can lose money and have to insure against it with paper work and higher prices, customer has to worry about reputation of a merchant and check his balance regularly, call the bank quickly etc.
Yes, if the merchant steals from the buyer, the raw BTC transaction is not reversible. But normally merchant has much more to lose than you if he is not nice (and merchants show their commitment by investing a lot in marketing and development) and in rare cases when you transact more money, you can use escrow and extra paperwork. But that's totally optional and is not needed when paying for a coffee, a book, or some inexpensive service.
You know how some people pay with credit card simply to get the airline miles or 1% cash back?
Who pays that? The merchant. (Well, the merchant adds it to the price that everyone pays, but I digress).
Now given the option. Pay $100 with your credit card or pay $98 if paying with bitcoin, which are you going to choose.
Stripe and PayPal both are at 2.99% + $0.30, Square is at a flat 2.75%. So giving the customer the 2% discount for paying with bitcoin still yields the merchant more than had the customer paid with a credit or (signature-based) debit card transaction.
But, almost no one seems to offer a discount for cash - which they pay 0% on and they don't have to wait to collect from the credit card companies.
There are so many of these alternative payments systems available nowadays, but none seem to really offer any benefits (or protection or increased warranties) to me over a credit card to change my personal purchasing behavior.
Merchants incur expenses dealing with cash as well, so accepting $0.98 worth of bitcoin might be equivalent to accepting $1.00 in cash and coin after the hassle of dealing with cash in factored in.
It will be some time before we see bitcoin used at retail, point of sale. But it really solves problems for online purchases -- for the merchant. And maybe that's where the the sweet spot is. If you want what the merchant sells and the merchant wants bitcoin (for the reasons you state -- protection from fraudulent customer chargebacks), you won't be given the opportunity to use your credit card.
