Now, they know what you look like:

Google has quietly added facial recognition to its image search.   If you do an image search and append &imgtype=face at the end of the URL, you get only the faces associated with that search.  So, for example, an image search of “Novell” gives you screenshots, network diagrams, box shots and the like.  But if you append &imgtype=face, you get only people’s faces.  Cool, but scary.