At the end of 2012, Etsy CEO Chad Dickerson noted that mobile visits grew 244% year over year and represented more than 25% of all traffic. Halfway through 2013, this metric continues to steadily increase, with mobile web and app traffic accounting for about 40% of visits to Etsy. As this traffic grows, our designers and developers need to be able to test how Etsy works on more devices, screen siz