“NoSQL” is a misnomer. NoSQL databases aren’t designed to abandon SQL, the structured query language used pull information from traditional databases such as Oracle and MySQL. A better name would be “non-relational database.” NoSQL databases don’t use the neat tables of data that underpin relational databases.
The godawful syntax (UPDATE vs INSERT). The godawful semantics -- it's not closed under composition, for instance; too, it is not set based, which means all kinds of hideous contortions with DISTINCT and whatnot.
I don't have much time for the K/V stores (save Redis) but I'm also sick like unto death with SQL.
This is 2012, we don't want names that make sense. What the hell does the word "Uber" have to do with cabs? If my startup was vrxpubz.ly and was a way for kittens to upload cat litter into their social graph, I'd be good for at $500K in seed.