A little gratuitous tooting of my own horn. One of the benefits of blogging is that I can point to myself when I want to say "I told you so." Tim Bray had this to say about the real upside of AJAX
Pretty well all Web-publishing software does lots of templating and dynamic page generation, and pretty well all of it is piggish, stressing out servers (and, to be fair, representing a pretty good business opportunity for my employer).
I suspect there’s a huge system-wide optimization waiting out there for us to grab, by pushing as much of the templating and page generation work out there onto the clients.
I'd also want to make use of tags to store the "related items" or "see also" kinds of info. Some navigation links don't belong inline with the post itself but are sufficiently related to the content that they would do well to be included in the page -- the stuff that would help the search engines connect the dots.
[There was another source] of inspiration. I'm tired of landing on sights because they happen to mention one of my search terms in their side bar but nothing in their content is related to my search. There's just enough in the Google snippet to lure me to click, but only disappointment to be found when I get there.
 This may be an obscure metaphor. Wikipedia entry on Pilot Fish "The pilot fish is known for following large vessels and sharks, where it apparently feeds on parasites and leftovers." I think the first time I saw anything about pilot fish was on a segment about whale sharks. So in this context, the big fish is Tim Bray and I'm really just drafting :-)