# The «Tagging» core functionality adds multiple pages with the same human content (but different to Google) to SERP
**URL:** https://meta.discourse.org/t/the-tagging-core-functionality-adds-multiple-pages-with-the-same-human-content-but-different-to-google-to-serp/56787
**Category:** Bug
**Created:** [2017年二月2日 12:29 UTC](https://meta.discourse.org/t/the-tagging-core-functionality-adds-multiple-pages-with-the-same-human-content-but-different-to-google-to-serp/56787 "2017-02-02T12:29:51Z")
**Posts on this page:** 16
**Page:** 1
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It is a problem for my customers: when they search in Google, it would be better for them to see different pages from my site instead the same with duplicated content.
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I mean one of the uses of `canonical` tag is to prevent duplicate search results. Your site having `canonical` tags on all `tags` related pages. That’s why I told it’s not the problem of Discourse.
I guess Google will take some time before excluding the URLs by `canonical` tag. Let’s wait to see what Discourse team thinks about it.
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Is this topic related?
[https://meta.discourse.org/t/noindex-follow-in-tags-meta-robots-avoid-duplicate-content/56564](https://meta.discourse.org/t/noindex-follow-in-tags-meta-robots-avoid-duplicate-content/56564)
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I mentioned this before, @codinghorror should we even be allowing google to index the various “tag” pages, seems to me like a waste of server resources.
Thinking about it, I am not sure top or categories should be indexed as well, but as we creep along that way we reach the logical conclusion which is site maps.
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Indexing of the tags is very-very important to my traffic: as you can see, the tag pages are on the top of SERP. I just do not want a single tag to be included twice in SERP.
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[The data from Wikipedia](https://en.wikipedia.org/wiki/Search_engine_results_page#Organic_results):
> According to a 2013 study, the CTR’s for the first page goes as:
> TOP 1: 32.5%
> TOP 2: 17.6%
> TOP 3: 11.4%
> TOP 4: 8.1%
> TOP 5: 6.1%
> TOP 6: 4.4%
> TOP 7: 3.5%
> TOP 8: 3.1%
> TOP 9: 2.6%
> TOP 10: 2.4%
So when TOP 2 and TOP 5 shows the same page - I just loss my traffic for other pages.
What is why the @vinothkannans answer about `canonical` is not a solution.
And excluding tag pages from SERP would be crazy at all: a huge traffic loss.
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I don’t follow why there is a page indexed with `match_all_tags=true`… @dmitry_fedyuk Did you figure out where Google is finding that link? It’s not a valid query parameter, so it’s thrown away. Is it from a plugin?
> [@dmitry\_fedyuk](#):
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> And excluding tag pages from SERP would be crazy at all: a huge traffic loss.
Ok we need to merge the discussion from [the other topic](https://meta.discourse.org/t/noindex-follow-in-tags-meta-robots-avoid-duplicate-content/56564?source_topic_id=56787) then.
Google does seem to rank category pages (like `/c/envato-announcements`) very highly, and tag topic lists are basically the same thing. So… removing them would be a huge traffic loss or good for SEO? Or it depends and needs to be customizable?
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I would say no. Categories are strong walls with distinct groupings, and there “should” never be more than, say 40 of them total. Furthermore there is zero duplication in categories. You are either in a category, or you are not.
There could be thousands of tags, and they duplicate each other! So tags should just be excluded.
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