I see this stupid article pop up every couple months. There are a few things wrong with it:<p>1) Map/Reduce is an algorithm, not a datastore.<p>2) Map/Reduce is geared towards problems that SQL does not work well for.<p>3) They are not talking about Map/Reduce for most of the article. They are talking about schema-less document based data stores, like BigTable or CouchDB.<p>4) This is FUD published by a bunch of RDBMS consultants. They have a vested interest in shooting down competing technologies. This is pretty obvious from their _complete_ misunderstanding of the technology that they are attacking.<p>5) I dont understand why the poster specifically tagged (NoSQL) in the header since this predates the NoSQL "movement", and has nothing to do with the experimental RDBMS.<p>tl;dr : move along folks, nothing worthwhile here.