What does "NoSQL" refer to?  It is a general term for (predominantly) non-relational or schema-less datastores as opposed to "traditional" (relational) databases, popularised by recent developments in "cloud" storage and applications. See: http://en.wikipedia.org/wiki/NoSQL   Join this group if you're interested in scalable web apps and/or data stores, or if you just want to see what the fuss is all about.