I have gone through my entire pages and pasted each and every .html in to Google Search to verify exactly which pages have been de-indexed, and which have not. My conclusion is that only articles off main sections have been de-indexed. Example, here is my site structure: FRONTPAGE/ FRONTPAGE/PRIMARY-CATEGORY/ FRONTPAGE/PRIMARY-CATEGORY/SECONDARY-CATEGORY/ FRONTPAGE/PRIMARY-CATEGORY/SECONDARY-CATEGORY/INDEX.HTML FRONTPAGE/PRIMARY-CATEGORY/SECONDARY-CATEGORY/INDEX-ARTICLE01.HTML FRONTPAGE/PRIMARY-CATEGORY/SECONDARY-CATEGORY/INDEX-ARTICLE02.HTML FRONTPAGE/PRIMARY-CATEGORY/SECONDARY-CATEGORY/INDEX-ARTICLE03.HTML Now if you follow that, it's the INDEX-ARTICLEXX.HTML's that have been de-indexed but NOT the INDEX.HTML pages which LINK to the INDEX-ARTICLE00 pages. Note: All 200 pages were indexed up until a few months ago when Google began changing and actively de-indexing these particlar 'outer-pages', but no others before them in my site structure. Perhaps my case is different (it sounds it may be a lot different) to what a lot here are experiencing but it may account for some. In my case, I believe it is firmly due to a change that came with Big Daddy that either devalued the value of say directory submission links (and similar types) which made up the bulk of my PR etc or/and due to a newer way in which Google crawl now it simply doesn't index any further and will actually de-index content in the Google DB which doesn't have enough PR or weight distributed to it. Perhaps I'm crazy for thinking that.. or am I? Isn't there issues with space.. I did hear the rumours.. why don't Google show how many sites in its index anymore.. coinsidence? I know this doesn't account for FULL sites being de-indexed, but it may account for a lot of the de-indexing going on and some of the knock-on effects which would be huge if they are de-indexing pages from their DB that don't measure up in PR/weight. My site is down from 200 pages to 140 because of this, and I'm quite sure if I carry on building quality links eventually Google will re-include the pages it has dropped back in to its index. Google have not de-indexed any other type of page on my site apart from the ones furthest out of the circle of PR/weight if you get what I mean and it seems pretty solid what's happened on my site what's happened. Perhaps some may find this useful if you can understand my crap example of my sites structure. Pete
You're basically talking about deep content - ie, that Google may not have been able to reach in a crawl. Matt Cutts mentioned something before about the new crawl prioritising the pages for indexing, so I wouldn;t be too surprised to find your deeper level pages return to the index as Google fixes its crawling. 2c.