hmm ok not sure i follow, my understanding of how the SEbots parse is to follow links to the page and parse the html returned, so using ajax to pull content and put it in a div on a single page from this point of view should not hurt my seo should it.

Granted I may misunderstand something about how they work, but is it ok or not to say that as long as there is a link and it is w3c valid and can be followed by the bot that it should have no problem getting to the content.