The future is heterogeneous Platform as a Service (for example, http://dotcloud.com/ http://dotcloud.com/) in my opinion. I can't imagine going back to Heroku w

The future is heterogeneous Platform as a Service (for example, http://dotcloud.com/ http://dotcloud.com/) in my opinion. I can't imagine going back to Heroku where I can only host Ruby along with a selection externally hosted add-ons.