"What they know" is a pretty nifty and well done explanation of tracking devices (of the software nature not james bond nature) cookies, beacons and yummiest of all flash cookies. One thing that was annoying was upon returning to the site for the second time I couldn't click around till I'd gone through the intro tutorial again. Come on I'm from the click first ask questions later generation.
http://blogs.wsj.com/wtk/

Found via NPR
Speaking of Public Radio there's this
ha, funny
Illustrated Map of the History of Sci-Fi
http://www.boingboing.net/2011/03/09/wondrous-detailed-ma.html

This is a little too cutesy, but really interesting with the language and the fully wired house that will not doubt consume his family at some point
E.G. Led Zeppelin: The first three things you smoked were banana peels, catnip, and poppies, in that order.





