Good analysis here: http://betterposters.blogspot.co.uk/2013/09/link-roundup-for-september-2013.html http://betterposters.blogspot.co.uk/2013/09/link-roundup-fo

Good analysis here: http://betterposters.blogspot.co.uk/2013/09/link-roundup-for-september-2013.html http://betterposters.blogspot.co.uk/2013/09/link-roundup-for... If you don't have the y-axis, then a) there's no point in having it as a graph and b) there's the possibility for manipulative display.