-- Take Your Pick --
Since stumbling upon the musings of Emin Gün Sirer and his controversial post titled Broken by Design: MongoDB Fault Tolerance, I've found myself with a new respect for trolls. He doesn't give a fuck, and I admire him for that. He is a professor at Cornell University and coincidently happens to have his own shiny new NoSQL solution.
It's called HypderDex and it stores data in a place called HyperSpace!