lucy24 - 11:05 pm on Mar 15, 2013 (gmt 0)
For starters: Pick a few of the tastiest pages and submit them manually. Once the googlebot has crawled them and noticed the absence of a "noindex" tag, it will not be able to stop itself from crawling all linked pages.
General question that is relevant here:
Once the googlebot has picked up a non-304 response and passed its findings along to the indexing computer, can Google distinguish among different amounts of change? Change one letter and it's no longer 304. Delete a "noindex" line and you're no longer a 304. But can they tell when there has been a substantive change?
I'm thinking that if they can tell the difference, then they would notice if there have been major changes. And this in turn would trigger a jump-up in crawling, almost as if it were a brand-new site.