MadSciNet
- Answers to your science questions by people in the field. You ask, they answer. They also have a large, searchable archive of past questions.
Roleplaying Games - An About.com site with regular, useful articles about how to improve the roleplaying experience, from 'including holidays in your game' to 'how to curse in character'.
Sara's Chainmail Connection - Internet links for those interested in the appreciation, construction, and purchase of chain mail armor.
Scrapheap Challenge 2000 - Official site of a BBC TV show that challenges two teams of mechanically inclined contestants to build a machine that will complete a given task. From design through construction, the teams have ten hours, and must use materials found in the show's junkyard.
The Sentry Box Home Page - Comic/RPG store in Canada with many rare and out-of-print RPG accessories available.
SETI@home: Search for Extraterrestrial Intelligence at Home - A scientific experiment that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a free program that downloads and analyzes radio telescope data.
19th Century History - An About.com site regularly updated with articles about the Nineteenth Century.