...for people interested in online writing and usability.
Bob Stepno's online writing resources are excellent; I particularly like the links at the bottom of the left hand column on this page and his basic "how to get online" page.
User Interface Engineering is a Boston-based consulting group that did the first published studies of web site usability. The founder, Jared Spool, is a prophet of paper prototyping, which is the subject of its current lead article plus this review of their methods.