Joel on Software - http://www.joelonsoftware.com/
Joel Spolsky runs a popular mailing list about software development and software usability. He runs also a lively (and bare bone) discussion group.
Joel is a software developer in New York City, worked at Microsoft, Viacom, and Juno Online Services; and has now his own company, Fog Creek Software.
-- PeterThoeny - 12 Aug 2003
His article Building Communities with Software has some good ideas on communities. I think we can learn from this.
-- PeterThoeny - 12 Aug 2003
Most of his articles are worth reading. The archive is very interesting (http://www.joelonsoftware.com/navLinks/fog0000000247.html), esp. the chapters from "User Interface Design for Programmers" (at the top of the page).
-- EstebanManchado - 12 Aug 2003