I think part of the problem is because there's so many graphics, between video thumbnails and other graphics they have, it almost gives the site a cluttered and unorganized appearance. I used to be bad about that in the past, wanting to have a lot of graphics and such to make a site look eye-catching and such, but I've learned since then that the fewer graphics you have, not only does the simplicity make your site actually look better, but it certainly cuts down on space and bandwidth from visitors having to load the graphics to view.