Making a website for user submitted timelapse movies

I'm currently setting up a site for user submitted timelapse movies at timelapse.dotouch.com. I guess I will move it to some more final domain quite soon. At the moment it is possible for registered users to submit url's of webcam pictures. This image is then stored on the server every 4th hour. After a while it will be possible to generate movies showing the seasons change. There is also a feature to generate timelapse movies of chosen webcams with a lot more frequent snapshots (every 2 minutes). This is not open to the public yet.

Feel free to check it out at timelapse.dotouch.com and leave comments. Please bare in mind that this is a spare time project. I do it because i think it is fun, and to learn a little bit about shell scripting, php and drupal, which I use as a web front-end. I am planning on making it into a fun and nice site, though.