[semiel]

On the other hand, it's much easier to protect your Bitcoin keys than your credit card number. Credit cards basically require you to share your password with anyone you want to buy from, which is a pretty ridiculous security model.

If you really want to get paranoid, you can buy something like a Trezor[0] or other hardware wallet. I'm pretty sure it would cost more than my net worth for someone to figure out how to compromise it, given the lengths[1] they've gone to to secure it. There's no equivalent option for credit cards.

[0] http://bitcointrezor.com [1] http://doc.satoshilabs.com/trezor-faq/software.html

[kalleboo]

One reason PayPal is so popular is that it means you don't have to give our your card number to merchants. Hopefully more online merchants will also accept Apple Pay which has the same benefit.