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... but there are several other forums going on the subject.
[webmasterworld.com...] is one.
I've noticed that Google is keeping things fresh on my older sites, but some pages are having problems staying in the index on newer ones - regardless of the number of FreshBot visits (or whatever it is calling itself these days).
Martinibuster mentioned that a Google scientist (at SES) mentioned that Gbot is now crawling on a multiple schedule. Some sites get it daily. Some sites get it on a 3-4 week schedule.
IMO, Google is still experimenting....