Shuttercrack. com

http://www.shuttercrack.com/ is a very interesting resource.

Daily photos of flickr users that the organizers of this project liked are posted here.

You can add your pictures to a group on flickr: http://www.flickr.com/groups/shuttercrack/pool/

But it’s much better to add this person to your contacts http://www.flickr.com/photos/mijonju/

I hope you find it useful.