I'm definitely unbiased here as I've been too slack to submit a screen shot, but I saw several programs whose screenshots on the front page got me interested - but it wasn't obvious how to find out what programs they were!
I tried to click on the image to get more information, but I just got the unintuitive result that the scroller stopped, and nothing else happened.
Yeah, the javascript thingy does let you add a URL for each image, but I don't have any URLs to go with the screenshots, they're just a bunch of image files on my disk, so I'd have to manually figure out all the URLs and then create some kind of database for them, which I'd then have to integrate with the script I use to generate the html for the website etc.. So basically, it's just a bit of a hassle, and I didn't have time to do it.