It’s terrifying and awesome. Basically you see a picture you like and you can click on it, then you can search for more images LIKE that one by zooming in on a part of the image. While this could be very useful for just about everything, the obvious use is obvious.
of course I’m just searching for a camel-toe style bathing suit for Spring…
Seriously though, it’s pretty great for other stuff as well– really it is.