They simply mislabeled the original image, Opera should read Firefox, and the red unlabeled line should read Opera. Source: http://gs.statcounter.com/#browser

They simply mislabeled the original image, Opera should read Firefox, and the red unlabeled line should read Opera. Source: http://gs.statcounter.com/#browser-ww-daily-20130520-20130701 http://gs.statcounter.com/#browser-ww-daily-20130520-2013070...