Cloud Foundry Question

Folks, I was wondering, if any of you have any experience programming in either VMWare’s Cloud Foundry or Red Hat’s OpenShift or any of Salesforce.com's P-a-a-S offerings? Any thoughts you may have on the above – like which platform is good for what kind of applications? We are in the evaluation stage and any insights will be appreciated.

I have some experience in Ruby in which Cloud Foundry id written.

Aside from the topic above do you have any idea about custom wood house* framing? please i need your cooperation guys. Thanks!