Yes, if you load in all your content through AJAX/AJAH or some other form of client side process, google won't get that content when crawling your page. The best way to see what search engines will see is to load the page in a browser and then use "View Source".
There are ways to help search engines find your dynamic content, however, which typically involve creating static versions of the content in addition to your more user-friendly AJAX versions. Google outlines some methods for doing this using specially formatted hash tags here: http://code.google.com/web/ajaxcrawling/index.html
There are ways to help search engines find your dynamic content, however, which typically involve creating static versions of the content in addition to your more user-friendly AJAX versions. Google outlines some methods for doing this using specially formatted hash tags here: http://code.google.com/web/ajaxcrawling/index.html