Wowza! TechCrunch Adds 1 Million RSS Subscribers Overnight

Woke up this morning, did my rounds and saw this on Techcrunch:

Yes, that's 1,511,000 RSS subscribers. If I remember correctly, it was 594,000 yesterday - that's nearly 1 million new subscribers overnight.

I can only guess that one of the many sources that Techcrunch is a default feed/start page module on is miscounting? Maybe they are a default on a new service? Or if it is correct, congrats!