Google Keyword Advertising — interesting infographic about the most lucrative advertising categories for Google. #20 is an eye-opener!
Javascript Koans (GitHub) — an interactive learning environment that uses failing tests to introduce students to aspects of JavaScript in a logical sequence. (via Javascript Weekly)
Etsy AB (GitHub) — Etsy’s framework for A/B testing, feature ramp up, and more. (via Randy J. Hunt)
Chosen (GitHub) — a JavaScript plugin that makes long select boxes more wieldy. (via Steve Losh)
