I found a neat story written by By Karen Spern and Leigh Bahnatka on Indexing web pages and Information Architecture.The Article Does a great job in explaining why indexing is important on the Web, especially for Information Architects.
\"Information Architects now consider content as important as design. Visual design is in decline, as consumers are demanding original content and faster download times. Site maps can’t provide access to textual information, so web indexes will become standard on web sites. \"
Very cool stuff, for those interested in the field.