[rustyrazorblade]

We just started using Titan in production last week for shift.com, on a 3 node cassandra cluster. We open sourced our Object Graph Mapper library for Python here:

https://github.com/StartTheShift/thunderdome

There's a few caveats that come with working with distributed databases, so it's important to know what you're getting into. Neo4j might be easier out of the box (since more people are using it), but if you want a robust solution that'll work for 50 or 50,000 users, Titan feels like the way to go.