Thanks to the simplicity of ruby as well as the twitter and httparty gems, I've whipped up some Twitter bots today. The three bots will alert you when there are Red Hat, Ubuntu, or Debian security advisories. I'd set one up for Fedora, but their feed is broken today.
@redhaterrata - Red Hat Errata Updates
@ubuntusecurity - Ubuntu Security Notifications
@debiansecurity - Debian Security Advisories
As always, you can let me know if you have any suggestions for improvements, or other bots you'd like to see.
How about creating one for centos?