Whenever I discover a new thing online, I feel like I just dropped in from another dimension. How could I have missed this before? On the Google home page, click Images up at the top left, and search for an image match or source (just upload a jpeg from your desktop), or describe the image you are looking for, and Google will show you all possible visual matches to fit the description (photos, drawings, other graphics). Amazing stuff.
John Maybury, Editor and Publisher