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I dont removed my content... even if i think it's not good contents.

Juste before the 24 October, a lot of my content were indexed on antoher website, nearly 1500 pages. (my website is a part of a website network) and a configuration bug change all... i repare this immediatly but na change in SERPs. You think thaht its possibly the source of evil ?

Thanks

Yes, you have it here : http://imgur.com/tDmDUcJ

And you have reaseon for sure ! My change was arrived the 24, October 2014... Panda is my ennemy

Thanks for your answer.

You can see in these images the evolution of my pages on Google index and the change of my ranking since October 2014 : http://imgur.com/a/FoNuM

I think it was a Penguin sanction and not a panda sanction... but maybe you 've reason.

Thanks... I have a dream

Thanks.

Just before Penguin update on October 2014, 170 000 pages of my website were in the Google index. After this update, i lost step by step these pages to end with only 25 000 pages :-(. Since May 2015, another Penguin update, the number of my pages in the index grows up... but really slowly. Today, nearly 75 000 pages are indexed.

I made some changes in my linking strategy, internal/external... but nothing changed... Do you think that I just have to wait ? It's been 11 month...

Thanks a lot. I'm becoming crazy

it's been

I am on head of the SEO of a national real estate website that was impacted by the Google Penguin updates on October 2014\. ... we have made some changes on site, anchors text, new pages products / listings, setting up micro data ... nothing moves. (almost 60% of natural traffic and less, based on 25 000 / month)
We have a basic aggregated content (real estate ads) and a base of rich content, a little soup admittedly ... Several portals are in line with the same code, and they have not been impacted.
I identified a concern that can cause these issues ... the contents of the site have been indexed impacted (configuration simplicity) on other portals, running October 2014 (almost 1000 pages duplicates) .. . the concerned website has been fixed but nothing moves ... Non-impacted sites grew little (but does not drop), the site affected is falling ...
I'm at an impasse.
What do you advise me to do?

Is this jump config which resulted indexing over 1000 pages on other sites alone can justify this loss and this non-recovery (confidence index)?
Do soup contents must be moved, corrected, collect altogether? (I tend towards the latter solution, few rank pages and glad is really light)
Should there be a complete overhaul.

Links between all portals exist ... he may also be affected if nothing changes?