I did a view source. This page is pulling all the stories and links at once and then sits it on the site within the code. When a spider comes along it will grab all that code with the information and index it.

With some dynamic pages a click will trigger a database query thus refreshing the page and showing new content. The spider on this type of web page will only grab the code and content prior to the trigger.

So, your short answer is if you do it the way news.yahoo.com does it you should be fine since all content are on the page when it first loads.