Lots of articles in The Happiest Geek on Earth today:
- Mail Chauvinism, part four. The conclusion of Ted Nelson’s article (from the November 1981 Creative Computing) on how the U.S. Postal Service tried to seize control of email.
- The Luhn algorithm, implemented in Elisp.
- A potpourri of articles on usability.
- Peacefire.org’s list of weaknesses in software that circumvents Internet censorship.