Index page de-indexed / banned ? other pages are ok

[sbook]

Yesterday google removed our index page from the results.

Today they also removed language subdomains (fr.domain.com)..

Index page, subdomains are not indexed anymore.

Any suggestions?

--

No messages in GWT. No malware.

Backlink diversification was started in May.

Never penguilized or pandalized.

Last week had the record of all times of daily UV.

Other pages still indexed and driving traffic, left around 40% of total.

Never used any black SEO tool. 95% of backlinks are related; sidebar, footer links

No changes made of index page for couple months.

[Andem]

It sounds like you're experiencing a penalty of some kind, but I don't know exactly what it is called.

>> Backlink diversification

This worries me. How can you control backlinks and therefore diversify? This indicates to me that they are not organic.

>> 95% of backlinks are related; sidebar, footer links

They may well be related, but then I would also assume that that 95% of your backlinks are non-organic and thus discounted and/or viewed as spam. Footer and sidebar links have been discussed extensively on this forum since Penguin.

[Donna]

Classic example of OOP(Over Optimization Penalty). Search around this forum you will find plenty of solutions. Once you do the proper changes it take up to 2 months to start recovering, if lucky maybe 2-3 weeks. Same goes for canonical problems which is part of OOP in some cases.

[Andem]

>> Classic example of OOP(Over Optimization Penalty)

This sounds like nothing remotely similar to an "OOP". Taking this advice is highly ill-advised.

[brinked]

sidebar footer links can be a big no no. Are these sitewide links? If so, that can be part or the main reason behind the de-indexing.

What about the actual page itself? How many external links? Any hidden text/links going on here?

I would not say you have an over optimization penalty. An over optimization penalty is a name that generalizes ranking losses due to excessive seo tactics such as keyword stuffing (in the title tags, body content or even excessive use of the same/similar anchors in backlinks).

While you may very well have an over optimization penalty, that in itself does not help you because its not very specific.

The problem most of the time is usually the webmaster thinks they did nothing wrong. The way you talk about sidebar/footer links you actually believe these are positive factors for your website when usually they are not.

[Donna]

This sounds like nothing remotely similar to an "OOP". Taking this advice is highly ill-advised.

Ok lets ask the OP to provide the result of the "domain" query without the .tld and then we can go on from there. I bet its not the homepage but some "about us" or similar pages.

[sbook]

Yes, most of links are non-organic, they are bought, but all this industry is buying. Biggest websites has backlink near to us.

No, we dont have any hidden links, external only 5 links to network websites. 299 internal links. keyword density is only 0.9%. there is no over optimization

one more comment.
tools still show we have 71% of backlinks with the "domain anchor" which fits our domain name, 95% do-follow, and to index page.

but subdomains are new and they have small amount of backlinks (same type), so they were kicked because of index?

[sbook]

Yesterday index page got the penality removed. We did not make any changes.
Sub-domains are still banned.

[tedster]

I've seen behavior like this once in a rare while when it wasn't a penalty. The disappearance hit fast during a significant update, and then it quickly changed back. I do have some strong ideas about what kind of bug this might be, but there's little we can do about a short term bug so my theories are pretty irrelevant.

Penalties don't usually (don't ever?) last 3-4 days. I think you've been hit by a Google data bug. Please do keep us all updated about any changes for the subdomains.

BTW, if I'm right about this particular bug, it could mean that
your site is flagged as a STRONG one, not a troubled one.

[sbook]

Could this be connected with pre-panda update, algo change, which was on 14th?

Index page have rotating products. Subpages have less information and are rarely updated.
Maybe it would be better to stop the rotation of index, add new products every day and more information near to it. It would be content rich in this case.
With subdomains we can do is only turn on the rotation with products with more information. Impossible to add new products everyday.

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The leader website index came back, but not the subs. Visitors came back, except the subdomain country related ones.

The second leader index is still down, but Germany subdomain is up, and its visitors are almost at the same level.

Other 10 smaller website index pages are still down. Visitors come only from product pages.
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I am not sure if this is content issue or domain/keyword/backlinks related problem.

[sbook]

Leader website subpages are up again. And bringing visitors as usual. We did not make any changes.
All other 10 websites are still in same situation..

These 10 website have the content from the leader website, so this might be the reason. We are planning to add lots of fresh content here.

[tedster]

Here's my theory. The Google back end works with seed websites of various kinds. There are "tables" of very high trust sites, very low trust sites, sites that line up with different qualities that Google works with.

These "tables" contain only the hostnames, and not the rest of the URLs. And those hostnames need to be imported into the full index right when it goes live - and that means imported to a lot of server clusters, not just one.

Google moves a LOT of data from server cluster to server cluster, during development and when going live. In fact, one "server" can better be understood as a building full of server racks. At Google's scale, and with the Caffeine infrastructure, one physical machine is just not a realistic unit.

Sometimes those data ports on the back end get buggy - it happens. Partial data imports, corrupted entries, etc. And then sometimes a good site can lose its home page (its hostname) for a while, because of a data problem that occurred with the "good site data import".

Or so goes my theory.

A lot of reading and data study has gone into it, but I sure can't claim it's verified. The most I can say is that during the time where we focused on watching the various data centers, some members here are sure they saw it happen in real time. And some members saw their home page disappear from the google.com SERPs but not from Google's other ccTLDs.

[viral]

Thanks for that tedster one of my sites is experiencing something similar to this site is still everywhere in other tlds but has only 4 pages (out of 200) indexed at .com. Weirdly the pages seem to be completely random in age etc. I have had this happen before and the site came back after a few days so I am not concerned it is just nice to see I am not the only one to experience this.