Riya

Riya is a photo-searching service that is able to recognise faces and read text in images. The company was started after it's owners realised that they had 1000's of digital photos on their computer all labeled DSC0009.jpg, that their friends just never remembered to send them the photos they wanted from them, and that searching for images on the web just doesn't work very well.

"We are a group of determined face recognition and text recognition researchers and engineers who believe it is time for a new type of photo search that uses technology to look inside and automatically tag photos. We hope this will revolutionize how people "see" the world. "

The system is still in "alpha" (a very early testing stage) and currently only works with Internet Explorer 6 upwards (although Firefox support is coming). Check out http://riya.com/