Currently my favorite wiki is DinJ: Deutsche in Japan. It’s fairly new, about a month and small with its 37 pages, but promising. The DinJ mailinglist where the idea originated has been founded in 1999 and has been a constant source of useful information. The software the page is running with is tikiwiki. I’ve tried it last year, if you’re looking for a stable CMS/Groupware with extensive wiki capabilities, look no further.
The Scale of the Universe – if you ever wanted to put everything in perspective
(hat tip to ScienceAlert)
Se·man·te·rei. Substantiv, f. Ablenkende Debatte über Wortbedeutungen in Sachdiskussionen