I believe Dustin Curtis is the author: http://dcurt.is/codename-svbtle/

In addition to samstave's comment, I prefer using hnsearch

http://www.hnsearch.com/search#request/submissions&q=svb...

Obtvse is an open clone if you want to use that design.

Heh, google for 'svbtle site:news.ycombinator.com' - there was a lot of drama here when it was released. If you like it so much, you might find its history interesting