As I wrote last week, I created Preditter as a project to use some of the technologies that we have invested in. I blogged on Monday about how amazingly easy it is to use the Twilio API. Up today: MongoDB (which has been created by the team at 10gen). Here too, I was blown away by the ease of getting going. You can literally be up and running with MongoDB in minutes (on my Mac laptop I just downloaded and on my Slice running CentOS I used yum). But the thing that I was most pleased about is h...