Interaction Design  
   Companion site for the book "Interaction Design: Beyond Human-Computer Interaction," by Preece, Rogers and Sharp. On this site there are a variety of resources and activities to support one's exploration of interaction design.
   http://id-book.com

The Interaction Designers Coffee Break  
   Posts, articles and links about interaction design organized by subjects.
   http://www.guuui.com/

Usability News  
   Information in usability and human-computer interaction.
   http://www.usabilitynews.com/

Usability Views  
   Articles classified by site, date, title and popularity.
   http://www.usabilityviews.com/

UI Design Webzine  
   Articles on interaction designers, book reviews, editorial and interviews.
   http://www.uidesign.net/

TaskZ  
   User-centered technology books, articles and links.
   http://www.taskz.com/