Yes. I've been waiting for them to do this. It's the next logical step for them.

The only thing that concerns me is the fact that it will now be much easier to track the purchases you've made. Just like how Google now tracks you as you search, email, and watch and delivers relevant ads to you based on that, this Amazon payment will do the same thing. They will be able to better judge the things you buy and want to buy for a wider range of sites. It will also be easier to see your overall researching and purchasing patterns and find a way to make money off of that data. I'm sure if you start buying a slew of chemicals and nunchucks, the NSA will be all over you.

Other than that, this is great. I would use this for sure as well. I hate re-entering my card. I hate researching to make sure this random site with an awesome hoodie will actually deliver my product. Most of all, I hate the auto account creations that come with a single purchase. I probably have 100 accounts with 6 different emails and 100 different passwords from random one-off purchases. The only time I visit the site again is to turn off the fucking email notifications.