When it comes to conveying information, charts and graphs present a huge amount of interesting and practical material. They are generally easy to read and offer a snapshot of interesting facts in a single graphic. The main problem is that there aren't that many spreadsheet and graph authoring programs around. Sure there’s MS Office – but it’s kind of expensive - and there’s Open Office too, but that’s somehow, just a cheap version of MS Office and though it does many of the same things, it’s slightly, well, quirky. Keen to find something cheap - and preferably free - and very user friendly when I wanted to generate a graph, I decided to head over to Chartblocks.com and use the free on-line tools, rather than crank up Office 2010 again.