For the free web counters. (Up until 2006, we used http://www.digits.com)
For some of our graphics (textures, buttons, icons, and lines).
For some free icons.
For some free images.
For some nice free textures, and some neat online tools to manipulate them.
For language translation and search services.
Who kindly consented to use of their material, or who unknowingly contributed through fair-use provisions of copyright law.