This is a simple Rails 3 application that publishes changes to a Swiftype search engine via their API.
Swiftype has a crawler that will index your site, but you may want to use their API to make sure your content is always up-to-date, if not all your content is crawlable, or just to have complete control over what gets indexed.
This application is a companion to my screencast
Got feedback? Email me or hit me up on Twitter.