This article by Bob Warfield was the first NoSQL post to be Techmemed. Main point:
In fact, I would argue that starting with NoSQL because you think you might someday have enough traffic and scale to warrant it is a premature optimization, and as such, should be avoided by smaller and even medium sized organizations. You will have plenty of time to switch to NoSQL as and if it becomes helpful. Until that time, NoSQL is an expensive distraction you don’t need.
Differently put: don’t use NoSQL for the wrong reasons. But isn’t this what NoSQL people have been saying for so long: don’t use a relational database for the wrong reasons?
Original title and link: Techmemed: NoSQL Is a Premature Optimization ( ©myNoSQL)