How the north ended up on top of the map is an article by Nick Danforth, author/curator of (The/Mid) Afternoon Map blog, detailing how the north-up orientation came to be the default orientation, looking beyond Eurocentrism to Byzantine monks and Majorcan Jews who set the path for modern cartography. If you want more information, you might enjoy the Wikipedia article on the history of cartography, or you can really dig deep with the three-volume text, The History of Cartography, which is available in full from the University of Chicago Press online, split into individual PDFs for each chapter. [more inside]
Mappa Mundi is a magazine about information visualization and navigation with a focus on the web. What similar sites are out there? A second related question is when why are tools for finding stuff on the web so primitive? More inside.