[cvnyw]

It's pretty easy to replicate my problems with image search and I suspect what the problem might be.

They have a proxy (just like google) so they don't directly load the images you search for, they make their servers load the images and then send you a proxified version. If you search for obscure terms, they won't have a cached version available so they will have to request it from the actual server, and that makes all images take a while to load. On the other hand Google always keeps the images cached so they can serve them instantly.