MongoDB wants to be the next gen MySQL
At least this is how I read the ☞ post published on their blog.
MongoDB was never designed nor intended to be a niche database for a small subset of problems, but a new type of database, that solves lots of real world problems for a large subset of the developer community.
And this seems to be confirmed by a previous interview with Eliot Horowitz, CTO of 10gen, the company behind MongoDB. I only hope that over time they will add the missing features that make scaling MongoDB feel very similar to scaling MySQL.