http://www.webtechniques.com
Articles specifically target the do's and don'ts - some are highly technical.

http://info.med.yale.edu/caim/manual/contents.html
Yale Style Guide

http://www.poorrichard.com/freeinfo/top10.htm
Poor Richard's Top 10 Mistakes to Avoid When Setting Up a Web Site

http://www.webpagesthatsuck.com/index.html
Where you learn good Web design by looking at bad Web design

http://www.coe.uh.edu/insite/elec_pub/HTML1998/de_pan.htm
Article: Optimize the Web for better instruction

http://www.fno.org/homesweet.html
Proposes 18 tenets of Web site design

http://www.multnomah.lib.or.us/lib/homework/
Tutorial about reviewing sites

http://kids.library.wisc.edu/about.html
KIDS Report Teacher Handbook TOC -- KIDS Report Criteria and Scout Report Criteria

http://www.yahooligans.com/tg/teachertips.html

http://edsoasis.org/guide2.html

http://www.albany.edu/library/internet/evaluate.html

http://www.ascd.org/readingroom/edupdate/2000/june00/14jun00.html

http://www.school.aol.com/administrators/adn_site_selection.adp

http://www.uwec.edu/Admin/Library/Guides/tencs.html

http://school.discovery.com/schrockguide/eval.html

http://illinois.online.uillinois.edu/model/sqone/webevaluation/index.htm
Evaluation the Validity of Information on the Web

http://inst.augie.edu/~asmith/Evaluate.htm
Evaluating Information on the Web

http://milton.mse.jhu.edu:8001/research/education/net.html
Evaluating Information Found on the Internet

http://www.district28.k12.il.us/WebEval/kmh-thinking%%20on%%20the%%20
Developing Critical Thinking through Information Literacy

http://www.paideiaschool.org/tech/validity.htm
Web Evaluating the Validity of Material on the Internet