|Lenna wrote: "the download side of things is more complex"|
One other thing which makes the downloading "seem" complex when it really isn't complex at all...
If you click the actual picture itself, it leads back to the same page you were on... and it makes you think that somehow the picture auto-downloaded. (It doesn't auto-download though... so when you go look for it in your Downloads folder, and it's not there, then you wonder what you did wrong.)
I think the confusion could best be eliminated by making it so that if the user clicks the picture, it gives them a popup which says something like... "To download this picture, use the text buttons below the picture: PNG LOW, PNG MED, PNG HI, SVG, ODG. Simply click the button of the file format you wish to download, then on the next page, right-click the image and save it."
Of course, now that I have used the site for awhile, I know that you can actually simply right-click the PNG HI button and "save link as" at least on Linux you can... so that makes it even EASIER!! I don't know if the same thing can be done on Windows or Mac but am pretty sure it can.
Many sites don't allow you to use right click and "save link as" on the top page of an image like clker does. That's why in my opinion this site is superior. It makes it very fast to save the image you want.