Microformats
Human-focused, machine-parseable formats. When I first saw it I immediately thought "textile & markdown!" but those aren't mentioned at all.

My interest in Textile and Markdown stems from a desire for a rich editing experience that degrades gracefully to plain text. (Basically, I want a slick outliner when I'm at a PC, and a usable text file on my phone or other limited-capabilities client.)

last timestamped: 19:34:47 19-Dec-2005
in categories:Design/IA, Design/Userexperience