How to write 225 words per minute. With a pen. Dennis Hollier, in the Atlantic, writes about Gregg shorthand, a piece of analog data-compression technology now largely forgotten and probably forever unequalled.
Every Noise At Once. A map of musical genres, built by Glenn McDonald of The War Against Silence and the Echo Nest. Click on a genre name to hear a sound sample, or pop it open to see a map of bands within that genre.
Visualizing Economics. Catherine Mulbrandon makes visualizations of economic data, including the variation of the top marginal tax rate over time and the high cost of buying a TV on credit.
The Music Ngram Viewer from Peachnote tracks appearances of any given note or chord sequence in a corpus of 60,000 optically scanned public-domain classical scores, ranging from the 17th century to the present -- a la what Google Ngram Viewer does for words and phrases. A fuller description with examples. And if you don't like the Google-esque GUI, you can download the raw data and mess with it yourself. (Via Music Hack Day Boston.)
Crayola Color Chart 1903-2010. It's not just Green Yellow and Yellow Green anymore. (via DataPointed.) (More DataPointed color-data goodness.)
Kaggle hosts competitions to glean information from massive data sets, a la the Netflix Prize. Competitors can enter free, while companies with vast stores of impenetrable data pay Kaggle to outsource their difficulties to the world population of freelance data-miners. Kaggle contestants have already developed dozens of chess rating systems which outperform the Elo rating currently in use, and identified genetic markers in HIV associated with a rise in viral load. Right now, you can compete to forecast tourism statistics or predict unknown edges in a social network. Teachers who want to pit their students against each other can host a Kaggle contest free of charge.
Mercenary Epidemiology: Data Reanalysis and Reinterpretation for Sponsors With Financial Interest in the Outcome. (.pdf link) When should scientists be required to release their raw data for (potentially hostile) re-analysis? A letter to the editors of Annals of Epidemiology from David Michaels, Ph.D., MPH, public health blogger, author of the book Doubt Is Their Product, and, as of December 2009, the Assistant Secretary of Labor for OSHA, unanimously confirmed by the Senate despite the dismay of some. Michaels interviewed at Science Progress about Doubt Is Their Product (podcast, with transcript.)