How up-to-date is that list? I mean, in terms of removing entries that no longer apply. Some date from 2009 to 2011. Are these systems still in place, and actively being used today?

I've heard of or directly witnessed enough situations where somebody with influence, but maybe not much actual technical experience, pushes for the use of a NoSQL database of some sort. Yes, the project is implemented and often does end up in production for at least some amount of time. But it doesn't survive long. Problems arise, and the system is either discarded, or moved to a more traditional relational database system. That's why I'm curious about that list, and how many of the entires are still valid, as we approach the beginning of 2013.

I loved this comment 'I noticed that "mongodb.org" is not on the Production Deployments List above. It appears this site uses Confluence which I believe uses PostgreSQL(or MySQL). It's hard to have confidence in an organization that does not even use its own technology.'