You should know that:

• you can move (drag&drop), resize (with SHIFT) and upload your own images
• please refresh the site once in a while (F5), we still have some synchronization issues
• this website is hosted on Google App Engine
• it's using external image resizer service
• it's using external comet daemon service
• we use JavaScript drag&drop library from Walter Zorn
• the sources are availbe public