I guess the new NSA datacenter is not for raw bruteforcing but for mining semantic data from all your intercepted e-mails and other unencrypted junk travelling trough internet backbones.
+1! Probably far easier and more cost effective to simply find the IP's of most bitcoiners, and destroy all their stuff, set them up on rigged cocaine charges, and put them in prison. That'd be a better attack vector.
According to the article, they are specifically targeting AES encryption, and are hoping to break 128-bit and lesser stuff from 10 years ago to do analysis of the old data to see if there are patterns. They have collected information for a long time, and are only now having a go at actually breaking the encryption. 256-bit should be fine for a while yet, but in 10 more years it may also be breakable, if you have a 2 billion dollar budget.