Best of CHI-WEB and sigia-L, Essays on web design interaction usability experience architecture etc
The chi-web and sig-ia mailing lists are two email based discussion groups on the topics of web usability, design and human computer interaction (the later with a heavier emphasis on information architecture).
Sample topics:
Summary of prototype tools
Web UI Prototyping
Web glossaries
Bad websites for u-testing
Windows UI design refs
World/regional divisions
Email acronyms
Internet usage stats
Browser support flowcharts
Good design firms
Web app workshop