[j_baker]

I'd argue that there are more people out there who could be benefitting from using Mongo but won't because SQL databases are "standard".

[code_duck]

I agree. I have a few applications which I suspect could benefit from a non traditional data store. The reason I haven't used one yet isn't that, though, it's simply that I am much more experienced with installing, tuning, maintaining and programming for relational databases.