lucy24 - 1:06 am on Aug 5, 2011 (gmt 0)
I started wondering if my most important pages were even visible any more to Googlebot
Wouldn't a sitemap do the same thing? One category of Crawl Errors is "On Sitemap", presumably meaning the sitemap is the only way they know of a page's existence. If you've got a trick for convincing g### that a given page doesn't exist, once they've decided it does, I think everyone would like to hear it.