Why one of my top pages dropped?

[fablau]

Thank you Everett! That makes sense. I appreciated your help!

I'll let you know if I'll have any more questions about all this, but I think for now I'll have to work to cleanup my back link profile first... thank you again.

[fablau]

Everett, I have an update about this issue and I'd like to know your thoughts about it.

After further research we have discovered that our "violin category page" wasn't the only one to have lost a lot of ranking in the past month or so. A whole bunch of category pages, similar to the violin page have lost rankings as well, a big deal, from page 1-2 to page 30 or more. Strange thing, it looks like our "most popular" and most "linked" pages have lost rankings, whereas less popular and less linked page have lost nothing (!!)

Here are some examples:

Category pages that have lost rank since June 25:

http://www.virtualsheetmusic.com/downloads/Indici/Violin.html (dropped on 7/3)

http://www.virtualsheetmusic.com/downloads/Indici/AltoSax.html (dropped on 7/19)

http://www.virtualsheetmusic.com/downloads/Indici/PianoSolo.html (dropped on 7-19)

and many other "instrument category pages"

Other popular category pages like our most popular composers page have lost rankings in a similar way:

http://www.virtualsheetmusic.com/downloads/Bach/DownloadBach.html (dropped on 7/2)

http://www.virtualsheetmusic.com/downloads/Mozart/DownloadMozart.html (dropped on 7/6)

http://www.virtualsheetmusic.com/downloads/Debussy/DownloadDebussy.html (dropped on 6/25)

And as I said above, other similar pages, but not as popular and linked within our website, haven't lost any rankings:

http://www.virtualsheetmusic.com/downloads/Indici/Accordion.html

http://www.virtualsheetmusic.com/downloads/Indici/BassGuitar.html

http://www.virtualsheetmusic.com/score/ClarinetCBb.html

http://www.virtualsheetmusic.com/downloads/EnnioMorricone/DownloadEnnioMorricone.html

http://www.virtualsheetmusic.com/downloads/MichaelWSmith/DownloadMichaelWSmith.html

http://www.virtualsheetmusic.com/downloads/MarkHayes/DownloadMarkHayes.html

Another strange issue is that all our "genres" category pages are ok, up and running and seems to have not been affected:

http://www.virtualsheetmusic.com/downloads/Indici/Genre/Jazz/

http://www.virtualsheetmusic.com/downloads/Indici/Genre/Pop/

Note though that genre pages are much less popular than instrumental and composer/author pages, and less linked within our site.

Any ideas? I don't think this can be due to a "penguin" or "back-link profile" related issue, but maybe a Panda issue, or... what else?

[Everett]

I don't understand why you don't think it could be a backlink problem. All of those pages I checked had some spammy looking links. By "spammy looking" I mean exact-match anchor text and followable text ads on low-quality websites.

[fablau]

Thanks for your reply Everett.

Well, I don't think that may be a backlink problem because I haven't found any clearly "spammy" websites linking to those category pages. Actually those pages don't have that many backlinks overall.

Please, let me know if you think I am missing anything key here.

I appreciate your help!

[Everett]

This looks like a paid text ad:

http://www.news-1.com/musicnews.php

I'm not sure what this is, but it could look suspicious:

http://web.supernet.com.bo/twallace/Violin/InternetViolin.html

Some of the links are iffy, like the ones from music sites. These are topically relevant, when every link has the exact same anchor text it begins to look suspicious.

This link seems very out of place and spammy:
http://web.supernet.com.bo/twallace/Violin/InternetViolin.html

The premise for this text link, again with the exact-match anchor text, is that Dr. Who may want to relax and learn how to write "Virtual Sheet Music"?

All of these pages have links like that. You need to do a lot of disavows.

[fablau]

Thanks Everett, I am aware of those pages and they have been already put on our disavow list, but I was talking about all other category pages that have lost rankings in a similar massive way for which I can't find any particular bad back link.

For example, I have used Open Site Explorer for the following similar category pages, but I couldn't find any bad back link:

http://www.virtualsheetmusic.com/downloads/Indici/Choir.html

http://www.virtualsheetmusic.com/downloads/Indici/StringQuartet.html

http://www.virtualsheetmusic.com/downloads/Indici/TenorSax.html

The following ones belongs to a different category altogether (composer's pages) and yet, I can't find any bad back link pointing to them:

http://www.virtualsheetmusic.com/downloads/Beethoven/DownloadBeethoven.html

http://www.virtualsheetmusic.com/downloads/Chopin/DownloadChopin.html

http://www.virtualsheetmusic.com/downloads/Debussy/DownloadDebussy.html

And many others...

So, I am wondering, why those pages dropped as well? Can a single penalized page put down an entire category of similar pages?

[fablau]

Everett, another clue that suggests me that those category pages may have been hit by a "quality" algorithm instead than a "back link" one, is that it looks like Google released a "Panda" like update in June, and that's exactly when the problem started on my own website:

http://www.gsqi.com/marketing-blog/june-2016-google-algorithm-update/

I can confirm what Glenn highlighted in his article over there: same dates, similar issues.

[Everett]

Fabrizo,

You may be correct about it being a quality issue. What makes me think it is link related is that you said it only affected certain keywords, which tends to be the result of overoptimized anchor text. You may also want to check internal links, which can be overoptimized as well.

In terms of quality, it wouldn't hurt to improve the pages visually. You conversion rates would probably skyrocket.

[fablau]

Thank you Everett, I understand, I started this thread thinking that just one page of my "category pages" had a rank drop, and that was the "violin sheet music" optimized page. Hence the confusion, my fault. Then, after further research, I discovered that all instrumental category pages dropped in a similar way, therefore I begun to see the problem no more "keyword relate" but "quality related"... here we go

In any case, yes, thank you for the tip, I'll check my internal links. I know that we have overoptimized those a big deal in the past years, and we may want to "de-overoptimize" them a little bit.

And yes, as I am discussing on the thread below, I have currently "noindexed" all those pages while we are working on a redesign of them:

https://moz.com/community/q/can-adding-noindex-help-with-quality-penalizations

Hopefully that'll make most of the trick.

Thank you again very much, I appreciated your help!

[fablau]

I almost forgot: about Internal Links, please, have a look at this discussion I am having here below:

https://moz.com/community/q/rankings-drop-and-google-search-console-internal-links-panel-correlation

I'd love to know your thoughts about it. Thank you again!