I read about a really cool project over on 52 Projects today. Somone over at Flickr has started a group which is trying to get 7,777 members to take and upload 7 photos on 07/07/07. They are currently trying to work out some publishing possibilities, and hope to publish a book of the resulting photographs, with all the proceeds going to UNICEF. So far, they are just at about 3,000 members, so there's lots of room left for people to join in. I've already joined, and you should too!