theitboy - 11:46 am on Sep 8, 2003 (gmt 0)

My observations. (I should say that my site is quite a bit smaller than most people's here, so I may be seeing slightly different things.)

Fresh updates occur most days.

"Deep" updates, yes, about every three weeks.

Pagerank updates also about every three weeks, but a different schedule.

My experience is that while the fresh updates can discover new pages, they don't "stick" unless they're continually refreshed, at least until the next big update.