According to the Anonymous press release two days ago, they never launched an attack against Amazon:

After this piece of news circulated, parts of Anonymous on Twitter asked for Amazon.com to betargetted. The attack never occured.

After the attack was so advertised in the media, we felt that it would affect people such as consumers in a negative way and make them feel threatened by Anonymous. Simply put, attacking a major online retailer when people are buying presents for their loved ones, would be in bad taste.

They didn't just mimic a public API... they included a statically linked version of MySQL without releasing their derived code under the GPL as well:

You might think it's a bit of an odd combo, but ice cubes and dd has worked multiple times for me when attempting to recover data from a laptop's internal disk. It's a bit trickier with internal disks since you can't get the circuit boards wet, but it's still possible... This is the dd command I use:

dd if=/dev/sda of="/Path/To/Output/Image.img" bs=512 conv=noerror &
pid=$! ; while ps $pid > /dev/null;do kill -SIGUSR1 $pid;sleep 15;done

Gives you a nice status report every 15 seconds. If you're doing this on OS X, use "-s SIGINFO" instead of "-SIGUSR1".

Nope - Firefox had roughly 8 million downloads in a single day, versus the 3 million OO.o 3.0 downloads in the first week.