A somewhat related story...<p>I have a problem recognizing faces. I have many times asked who someone is after seeing them many times before. My wife tells me who different characters are in a movie since I can't tell them apart.<p>To me all faces fall into a finite number of categories. There are many people who look alike so everyone looks like one of a score or two faces.<p>Years ago (2000) I developed a website called facelink where people posted photos of themselves and were given short links to put in online discussions. But I had an ulterior motive. I hoped to mine this database of face images to try and categorize faces, at least as how I saw them. Unfortunately the site took off and I was too busy to work on my original goal.<p>I had only ten's of thousands of faces instead on a million like the database mentioned in this article. Maybe when I have time I'll try again to categorize faces using this db.