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Originally Posted by dburdon
The question is how the search engine establishes intent.
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David, yes with AJAX and more generally web applications (it is not important what the technology is called) that is very important.
The heart of the problem is that content are not unique any longer. The newest AJAX technology uses
The XMLHttpRequest Object that is worse regarding page indexing than AJAX technology based on hidden (zero hight and width) frames. The hidden frames AJAX technology is based on asynchronous communication with the server taking place in the hidden frame and updating part of the page in (a) visul frame(s). Because the last technology is more SE friendly than that based on the modern XMLHttpRequest Object model, some companies like Google have as far as I know combined the two technologies in GMail and Google maps. Google suggest is an other AJAX based website. Yahoo news another.
Source:
Nicholas C. Zakas, Jeremy McPeak, Joe Fawcett (2007 second edition or later): "Professional Ajax."
Important related link:
Zakas home page.
P.S.
I think the next generation forums will have AJAX technologies that remids you that a thread you posted to have been updated with a new post. That technology is described in the above mentioned book.