The killer app for crowdsourced photos – Searching through other people's photographs as soon as they've taken them is now possible thanks to a new search service. The potential is for finding a particular face perhaps in the background of a photo. It's an idea I've thought of several times recently – find pictures of you and your family on vacation even when you didn't take any photos, for instance!
Imaging, photography, photos, tips and tricks and a little science sauce