Since we're right smack in the middle of Microsoft's BUILD dev conference, the company's showing off one of it's Azure APIs with a site you can put to the test. How-Old.net allows you to upload a picture before the site recognizes faces and analyzes them to determine their age. No, I'm not 41... I'm 31, and that picture is from over two years ago. Other folks here at Engadget received results closer to their real age, but it made us wonder: why not use a web cam to snap a picture under current conditions. You know, after I've had a chance to apply my daily dose of wrinkle remover. Perhaps that option on the way.