If we're going to go that route, linking to the actual paper might be even more appropriate. Even the blog article is only a second hand source.

http://arxiv.org/pdf/1404.3840v1.pdf

If you read it carefully, there's a caveat about how this particular dataset (recognition of /cropped/ pictures of /unfamiliar/ persons) has relatively low human accuracy (97.5% as opposed to 99.2%), because humans also use other features. That is, there's more work to be done, and facial recognition isn't a "solved" problem yet.

All the same, very impressive work. Congratulations to the authors on achieving such an important milestone.