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smaran
Joined: Apr 27, 2006
# Posts: 68
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Posted: 2006-Jun-16 16:05
could any body explain me what exactly supplemental results mean. please help.i was really confused about this concept of supplemental result.
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Hampstead
Joined: Feb 20, 2001
# Posts: 2061
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Posted: 2006-Jun-16 16:28
A supplemental result is one that is not deemed fit to be included in the full index.
It could be an old no longer existing page or a page that has been penalised for spamming.
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SportsGuy
Staff
Joined: Aug 30, 2002
# Posts: 3603
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Posted: 2006-Jun-16 16:57
generally speaking sup results will be removed form the index during the next update - whenever that is.
The results could be because they are duplicate results from your own website (watch for things like http://domain.com & http://www.domain.com both resolving to your main page. The http://domain.com version should redirect users to the http://www.domain.com version of the domain) or because Google feels that the same content exists on another website already in the index.
Nothing personal, but if your content is very close to what someone else already has posted and indexed (maybe from using press releases to build pages, or from using "free" articles to build content pages), then G might see them as the "original" poster and choose to remove yours from the index.
If it's as simple as the www v. non-www domain issue (see above and search for "canonicalization" in here) it's easily solved.
If you've built a site on articles from other sources it'll be harder to deal with.
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g1smd
Staff
Joined: Jul 28, 2002
# Posts: 10465
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Posted: 2006-Jun-16 20:09
Remember that there are several types of Supplemental Results.
For a page that goes 404 or the domain expires, Google keeps a copy of the very last version of the page that they saw, as a Supplemental Result and show it in the index when the number of other pages returned is low. The cached copy will be quite old.
For a normal site, the current version of the page should be in the normal index, and the previous version of the page is held in the Supplemental index.
If you use search terms that match the current content, then you see that current content in the title and snippet, in the cache, and on the live page.
If you search for terms that were only on the old version of the page, then you see those old search terms in the title and snippet, even though they are not in the cache, nor found on the live page. That result will be marked as Supplemental.
There are also supplemental results where the result is for duplicate content of whatever Google considers to be the "main" site. These results seemingly hang around forever, with an old cache, a cache that often no longer reflects what is really on the page right now. Usually there is no "normal" result for that duplicate URL - just the old Supplemental, based on the old data. On the other hand, the "main" URL will usually have both a normal result and a Supplemental result (but not always).
Right now I see some interesting bugs in the Supplemental logic.
site:domain.com inurl:www brings 98000 www pages all with a recent cache.
site:domain.com -inurl:www brings 24000 www pages (even though the search says to exclude all www pages) all of them marked as Supplemental and all showing a cache date of almost a year ago.
That should not be happening.
Add to that the pages with meta robots noindex tags on them that have been indexed and cached, and are showing as Supplemental Results with a cache from 2005 June or July, and Google has a bit of a problem on their hands right now.
Oh, and searches with a hyphen in them are not fixed either. Search for an email address with a hyphen in it. See what results you get. Search again, replacing the hyphen with a space and see that thousands of supplemental pages appear from nowhere - all for pages that have (or had) the email address printed on them at some time.
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smaran
Joined: Apr 27, 2006
# Posts: 68
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Posted: 2006-Jun-17 06:14
Thanks hampstead, sportsguy. you people are always helping me. keep on doing that.
A special mention g1smd you are simply awesome. i admire you thanks alot sir.
I Remain,
smaran.
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philh
Joined: Sep 14, 2001
# Posts: 3050
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Posted: 2006-Jun-17 19:11
Yeah - good post gsmd 
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