What if we looked at this from the site's point of view? They are now serving 27 graphics per person per page. Let's assume that 1/2 the people that are currently online are able to cache the graphics. Heck, let's assume 75% of the people. Right now, there are 1,600 people online (rounded). 75% of 1,600 is 1,200. That means that 400 people are not caching these 27 graphics, which means that the site has to re-serve the graphics every time they load a page. Now, how big are those graphics? Each one looks to be less than 1k. Let's assume the total is 25k. This means that 400 people, per page, are having to reload these graphics. This means that 10,000k (or 10M) of bandwidth traffic is being used just to serve these graphics. Is this really more effecient than simple, text links? Obviously, Renderosity must have bandwidth to spare, if they want to use it up by serving these graphics.