What are the advantages of using a schema-free database like MongoDB compared to a relational database?

Question

I\'m used to using relational databases like MySQL or PostgreSQL, and combined with MVC frameworks such as Symfony, RoR or Django, and I think it works great.

But la

Answer 1

MongoDB was featured on FLOSS Weekly this week - http://twit.tv/floss105 A database using a similar concept is CouchDB which was featured on another FLOSS Weekly: http://twit.tv/floss36

I think it's worth listening to those in addition to the links provided by @marcgg