Google have launched a search engine for data sets similar to Google Scholar, allowing data scientists, researchers and others. The search engine presents summaries of each dataset along with links to the source location of the dataset.
Cartography Playground is a great interactive site that demonstrates various algorithms and techniques used in modern cartography such as clustering and generalisation. Tools on the site allow the user to interact with the various models and options.
This is a great demonstration post by Joel Simon on using genetic algorithms to optimise a school floorplan. He demonstrates an optimised layout for traffic flow, fire escape routes and access to windows among other things.
This is an excellent resource on the many pitfalls to avoid when using the many many different types of data visualisation methods and graphs. The site gives some nice examples of dos and don'ts for each graph type.
This is a beautiful interactive website that showcases how the same stars form different constellations across the many sky cultures, from the Western Modern constellations to those of the Navajo, Norse, Hawaiian and Aztec cultures to name but a few.
This is a very useful article by Taras Bakusevych on UXPlanet.org about the do's and dont's of dashboard layout and design. DAshboard type, graph purpose, layout flow and margins are just a few things that should be defined before design is addressed.