I'm the owner of Domain51, author of the first published book on Git and quickly becoming a rabid Lawrencian. On here I write about the business, our code, our clients, our mission. My code is online, my status is pretty easy to figure out, and in case you want to stalk me, I'm pretty easy to find.
Do you honestly think that the PhDs at Google, Amazon, Twitter, Digg, and Facebook created Cassandra, BigTable, Dynamo, etc. when they could have just used a RDBMS instead?