Some notes:

1. You're going to want to set permissions to 0733 on u/* and 0755 on i/.
2. You're going to want a lot of disk space and bandwidth.

TODO:

1. some way to stamp out imgur
2. Rackspace
3. client gzipping
4. client md5

Other contributors:

1. Gwen Howard
2. Sergey Smirnov
3. Daniel Supernault (logo)