Youtube link previews fine, but doesn't show up on front page

Okay here: http://emc-hp.com/news/ev-commentary/its-all-about-the-range-anxiety/ but not here: http://emc-hp.com Also, a couple of quick questions: 1) Is there a way to create a category image? 2) Is there a way to use the dead space to the right of my logo for a slider? Thanks!