Four short links: 15 April 2013

Know Your HTTP, Digital Exploitation, Insecure Webcams, and CS Courses

Know Your HTTP Posters (GitHub) — A0-posters about the HTTP protocol.
Crowdserfing — when a large corp uses crowd-sourced volunteering for its own financial gain, without giving back. It offends my sense of reciprocity as well, but nobody is coerced into using Google Maps or contributing data to it. How do we decide what is “right”?
Exposed Webcam Viewer — hotels in Russia, lobbies in California, and blinking lights in the darkness from all around the world. (via Hacker News)
Beauty and Joy of Computing — an introductory computer science curriculum developed at the University of California, Berkeley, intended for non-CS majors at the high school junior through undergraduate freshman level. Uses Snap, a web-based implementation of Scratch.