Riya
Wired is running a piece on Riya, an online photo sharing and management tool that uses face and text recognition to automatically tag photos. The premise is that once you've sufficiently trained the software with your family pictures, Riya automatically tags any new pictures you upload and identifies each person it recognizes. From the article, the software has proven sensitive enough to tell the difference between twins and recognize members of the same family. It can even read street signs for clues about a picture's location. Pretty neat!
The software was first reviewed at TechCrunch. Following are some of the first review of the alpha release: Hulleye Comes By, David Castera, Letters from Lex, Calm Computing and Software and Tools
Munjal Shah, the CEO of Riya has a blog here.