Lexonomy
(www.lexonomy.com)
Amy Warner's site. She specializes in taxonomy and metadata side of information architecture.
Added: 10/23/2002

Community Infrastructure for Information Architects
(www.info-arch.org/infrastructure/)
Started by Lou Rosenfeld, a forum for discussions on shared services for the information architecture community.
Added: 12/19/2001

IA Slash
(www.studioid.com/ia/)
Extensive news site for information architects. Has great category listing of discussion topics.
Added: 12/19/2001

Semantic Studios Articles Archive
(www.semanticstudios.com/publications/semantics/)
Archive of articles on information architecture topics by Peter Morville the co-author of the "Polar Bear" book.
Added: 12/18/2001

Louis Rosenfeld's Bloug
(louisrosenfeld.com/home/bloug_archive/)
Archive of articles on information architecture topics by the author of O'Reilly's "Polar Bear" book a.k.a "Information Architecture for WWW"
Added: 12/18/2001