Humanclock.com shows a photograph of the current time, with the photo changing every minute of the day (all 1,440 occuring minutes on Earth!) Thus you end up with a rotating picture clock sorta deal.
Compares many of the most well-known photo sharing sites, although it seems to have missed Fotki. Fotki is a top notch site, and deserves to be in any list of top contenders.
GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages. This is the official GIMP web sit