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Around 3 months ago we changed our pages from having URL's with underscores to hyphens and put 301 redirects from old to new, plus loaded the URL's into sitemaps. The old pages disappeared into the supplementals, but the new pages have not indexed.
We have a number of large sites with new pages varying in depth from 3 to 6 levels and up to 78k pages. Some of those sites which have identical sitemap pages, and navigation are fully indexed with PR 1-3 at level 5/6.
Others are very slow - with only a depth of level 2 cached, except where there are very PR7 authority / strong links - but even here the crawling is not full .
Shouldn't things have happened by now?
we changed our pages from having URL's with underscores to hyphens and put 301 redirects from old to new
I did something similar to a site some time back, and I wish I'd done it not with 301 redirects but with the old page containing just a link to the new one, with "page moved" or something like that, and then deleting the old pages a few months later.
I can't prove cause and effect, but from then on the site never performed as it previously had. Pages didn't recover their former PR or ranking even though external incoming links were corrected. I put it down to Google being suspicious about the wholesale 301 redirect, and now I use those only sparingly.
Oddly, 1% of new pages got out of supplemental into the regular index.
There appears to be no reason that the 1% got out.
The supplemental results experts and duplicate content experts indicate that they have observed it taking one year for a full supplemental recovery. Gee whiz.
My only imagination is that a large number of new urls = "Looks close enough to spam for us."
We have a news service and some pages are indexed fairly quickly.
But if pages are added in sections of the site that are not part of the news service, it can take months.
What is quite amazing is that Google promotes a search service that you can use to have your visitors to your site use to search your site. And then they don't even keep your site information up to date in their search engine by indexing pages.
We pulled it from the site because it just returned oudated and or incomplete information.
Our experience is that you just can't tell at all when, or if, Google will index you.
On smallish sites, typically, when I add a page, Google crawls it within a week or so and then indexes it within a month - sometimes longer, especially if the page is in a subdirectory. Perhaps it's a resource issue. I've found Yahoo to be very slow to pick up new pages, and MSN to be very very quick.