The photo at left is a picture of Marilyn Monroe. It's not one of the more iconic or famous shots, but if you are a fan, you might be curious to know more about it. A problem in the world of Tumblrs and blogs has crept into mainstream media. Photos and graphics are commonly used with no attribution. It's incredibly frustrating to find a picture/design/person that you are wild about and about which you would like to learn more. Many times I've asked bloggers and others more about a graphic they've used only to hear back, "Oh, I don't remember where it's from, but I like it so I posted it".
Now there is the beginning of a solution. Reverse-photo searches can find other websites that have used the same image. TinEye revealed to me that the photo of Marilyn is a still from The Misfits, one of her lesser-known, but highly acclaimed roles. Many pictures don't turn up any results, but at least it's a starting point.