Hi. My app (written in node.js) is currently hosted on OpenShift, which is cool because of the git integration. However, I'd like to know about other PaaS services, like AppFog, Heroku, DotCloud, etc... There's not much online to compare services, and many of the articles that are there are outdated - so I'd like to know what services you use and how they compare...<p>What services do you use/recommend?