From the ASIDE blog - 1 November 2013 http://theasideblog.blogspot.com/2013/11/is-there-visual-thinking-app-charts.html A terrific infographic that lays out traditional chart types in a kid-friendly, colorful fashion is "Nuts And Bolts Of Chart Types" from Online-Behavior. Familiar diagrams like the pie chart and line graph are explained in simple language. More sophisticated plots like the waterfall and radar charts also receive lucid billing.
The Rise and Fall of Online Empires - The social media landscape is an ever changing ecosystem that doesn’t really bend with the creativity of its founders. It is all up to the users these days, and that pretty much determines whether a service is going to last or fall into the shadows of a new, more interesting, social media site.