(1) "Rowspans Made Easy" This tip courtesy of Builder.com. See Builder.com article "Advanced HTML Tips" by Paul Anderson. Also reprinted "Web Design in a Nutshell, Chapter 10: Tables" by Jennifer Niederst. O'Reilly®.

(2) "Mental Models for Search are Getting Firmer" by Jakob Nielsen. useit.com: Jakob Nielsen's Website.

(3) "Search: Visible and Simple" by Jakob Nielsen. useit.com: Jakob Nielsen's Website.

(4) "What does PHP mean?" by DelphiFAQ.com.

(5) "Improving Search Engine Rankings" by John Pozadzides. WDG-Web Design Group.