[untog]

I think there are legitimate reasons to use a "NoSQL" solution rather than MySQL. I'm more interested to know in what use cases Mongo kicks it's competitors asses? What are it's competitors, even? I'll admit that the NoSQL world is a slightly blurry mess to me, with different products seemingly optimised for different cases.

[taligent]

MongoDB is a JSON document store. Almost all other NoSQL are key/value type stores.

If you have a use case that centres around storing document style data then MongoDB will be better suited.

[trustfundbaby]

not to be persnickety but its a BSON document store. Theres a difference.