This script reads an RSS-feed and tweets new entries to a Twitter account. It was created, to announce new posts to instant-thinking.de but could be of some use for other Octopress-blogs too.
If you decide to use it, just go ahead and fork/clone from Github to some place on your computer.
You then have to remove the .example extension from the config file and from the LaunchAgent-plist, to make them usable.
The feed-variable in config.yml obviously gets filled with your feed-address.
You'll have to obtain your Twitter-OAuth-credentials by registering an app at Twitters developer site and copy & paste them to your config file.
The mail settings are pre-configured for Google-Mail, if you got a Gmail-account you'll simply have to insert your username@googlemail.com address and password in the from- and smtp-fields. Configuration for any other mail-provider is left as an exercise to the reader and will probably require some work on the pony section in the script itself…
When you finished the config you can execute the script. It should start to tweet the items of your feed to your Twitter-stream.
Of course, you'll want to automate the execution with cron or launchd.
See this blogpost for more information and a launchd Example...