We've written a few posts on our blog about our A/B testing framework. Our event tracking system: http://www.thumbtack.com/engineering/building-our-own-trackin

We've written a few posts on our blog about our A/B testing framework. Our event tracking system: http://www.thumbtack.com/engineering/building-our-own-tracking-engine-with-mongodb/ http://www.thumbtack.com/engineering/building-our-own-tracki... ABBA, our tool for analyzing the results: http://www.thumbtack.com/engineering/gambling-with-the-devil-ab-tests-done-right/ http://www.thumbtack.com/engineering/gambling-with-the-devil... A script for using ABBA with Mixpanel: http://www.thumbtack.com/engineering/ab-testing-with-mixpanel/ http://www.thumbtack.com/engineering/ab-testing-with-mixpane...