While I didn't write this article, or even know the person that did, I thought it was interesting given the AWS outage recently:

http://blog.rainforestapp.com/post/26217277790/a-rough-guide-to-keeping-your-website-up-through

This may help some of you that run websites.  So give it a read.

-- Joel Esler | http://blog.joelesler.net | http://twitter.com/joelesler