jcoronella - 1:42 am on Sep 8, 2003 (gmt 0)

Feedback welcome on my observations:

Every three weeks google goes through a 'major update' - today is the day for it.
There is a 'sub-major update' weekly. And then 'minor updates' almost daily (what may be considered 'fresh updates')

Listings change gradually with the 'minor updates'. I suspect they are either mixing in local page rank updates (based on fresh crawls) or slowly combining the old and new indexes over that period to avoid webmaster upset.

If next week your total site serp referrals goes up (from 'minor updates' that is, or between 'sub-major updates' not from tonights 'major update'), that will likely continue for the next three weeks. If they go down, they will continue downward until the next 3 weeks until the next 'major update'.

This has been the pattern for about 4 months over many sites that I have seen. It happens like clockwork.