Infographics are a popular way of representing information in a visual way. Mashable.com regularly posts infographics on a wide variety of topics, and there is advice on creating infographics in this article on makeuseof, which also lists some useful tools. This infographic was created using Pages and Inkscape on a Mac, although they can be created with any graphics packages. Some services can create infographics for you – like this twitter infographic tool from visual.ly - why not try it?