Adding a well structured visually appealing element to what would otherwise be a block of text is an art in an of itself and is a great way to share knowledge!
Thank you for the interesting read and the link so I can try making my own.
My favourite is the oatmeal infographic about the mantis shrimp: http://theoatmeal.com/comics/mantis_shrimp
You are right! I really liked the mantis shrimp infographic.