Tips For NodeJS, A-records, SEO, Custom SSL Certs, and Scaling

Lots of helpful tips for running OpenShift day to day:
Tips for reviewing NodeJS errors
Tricks setting up A records for your dynamic IPs
Tips on SEO for multiple URLs pointing to the same app
When is Custom SSL Certificate support available for my Custom Domain
Tips for inter-gear communication
Tips on how to enable/disable automatic scaling on a scalable app