Hi , I've just bought a rMBP 13 in and can't seem to figure out what makes the Retina display special, and how I can put it to optimum use. It seems it doesn't actually have those many pixels, but creates this effect virtually? I've been using it on the default setting, but that makes me wonder what the big deal was all along. After all, it doesn't look all that different from my old MBP 13in display. When I shift to the next higher resolution that gives me more space, I am told that this may effect the performance. In all, I am quiet unsure how to maximise its potential. Can someone add clarity to all this? Thanks!