I was tempted to do some comparison, especially to Couch/Mongo/Cassandra, but ran out of time. I'll consider a follow up that compares them. In short, Riak win

I was tempted to do some comparison, especially to Couch/Mongo/Cassandra, but ran out of time. I'll consider a follow up that compares them. In short, Riak wins out to me against all three: * Faster than Couch & easier clustering * Better data integrity than Mongo * Less conceptual overhead & simpler code than Cassandra