Herenvardo - 10:58 am on Dec 10, 2003 (gmt 0)

The contract between webmasters and Google:
1st: Everyone wants traffic.
2nd: The better the first pages of SERPs are, the better these serps are
3rd: The better G's SERPs are, the more traffic google gets.
So, we can deduce that G wants to give good SERPs, ranking high the best pages.
4rd: The better a page is, the higher G will try to rank it.

So, there is no contract: If your page is good, G will rank it high for its own interest.

A web need SEs, and the SE's need a web to search in. Simply two entities in a symbiothic convivence.

Greetings,
Herenvardö