A great guide to setting up password-less SSH login using public/private SSH keys. Great tutorial for setting up additional Amazon EC2 logins.
EC2 :: Curvve Media Blog
Here is a quick and dirty guide to mounting an Amazon S3 drive to your EC2 instance on Centos 6 / RHEL linux systems.
This simple script will automatically detect and change your Amazon EC2 instances hostname to the correct value.
Skeddly is the automation toolbox for Amazon EC2. Automate your instance behaviors like start / stop, server load re-sizing, EBS & Snapshop backup and more.
Guide to setting up Swap Space on an EBS volume of a Centos/Ubuntu Linux Amazon EC2 web server.
A good guide and refresher on how to create or delete partitions on Linux (Red Hat or Centos). This is especially handy for those new Cloud installations and EBS volumes.