You can download the most current versions of other API-related documents from http://docs.rackspace.com/api/.
For information about Rackspace Cloud products, refer to http://www.rackspace.com/cloud. This site also offers links to Rackspace's official support channels, including knowledge base articles, forums, phone, chat, and email.
You can also follow Rackspace updates and announcements via twitter at http://www.twitter.com/rackspace.
This API uses standard HTTP 1.1 response codes as documented at http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html.
