Further readings on IA and navigation patterns;

http://www.jjg.net/ia/visvocab/
http://iainstitute.org/
http://www.steptwo.com.au/papers/kmc_whatisinfoarch/index.html
http://www.d.umn.edu/itss/support/Training/Online/webdesign/architecture.html
http://www.informationarchitects.jp/ia-notebook/
http://www.iawiki.net/IAwiki


http://www.welie.com/patterns/
http://harbinger.sims.berkeley.edu/..ebpatterns/home.php
http://developer.yahoo.com/ypatterns/