Paper entitled "The Anatomy of a Large-Scale Hypertextual Web Search Engine" by the now famous Sergey Brin and Lawrence Page. This contains the original Google algorithm:
http://www-db.stanford.edu/~backrub/google.html

Writing your own apps to take advantage of the Google API? Check out this resource:
http://www.soapware.org/directory/4/services/googleApi

And of course:
http://johnny.ihackstuff.com/
Even though in another post in this forum, this site is worth mentioning again. 'Johnny' wrote the book on this topic. Take a look at a free chapter of Google Hacking.

Have fun you search nuts!

Don

Gosh DARN it, Don, where do you FIND all these cool links and stuff?