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Found it- http://searchengineland.com/google-we-might-have-a-problem-with-index-count-reporting-in-google-search-console-228550

Nope, first thing I looked at was that.

The last nine days of product are not showing up in Google's index.

Robots has not changed, an no noindex meta tag.

Under crawl stats, Pages Crawled Per Day and Kilobytes Downloaded Per Day jumped around the time this happened. Time spent downloading stayed the same.

A few weeks after the spike in pages crawled and kilobytes downloaded dropped back to the normal range.

I have an ecommerce marketplace that has new items added daily. In search consoloe my pages have always gone up almost every week. It hasn't increased in 5 weeks. We haven't made any changes to the site and the sitemap looks good. Any ideas on what I should look for?

That was kind of my thought as well but with the drop in traffic I have to look at everything. SO strange.

We only changed it on item pages and traffic dropped on both item and category pages.

It did line up perfectly with this though https://www.seroundtable.com/google-algorithm-update-chatter-spikes-22472.html

I have been trying to figure this out- https://moz.com/community/q/what-should-i-do-with-old-e-commerce-item-pages

I added n/a to the end of the page titles so I could figure out how these pages were performing. Since I added them my organic traffic has seemed to have dropped. It has only been a few days so maybe it is an anomaly. Everything else has stayed the same, would this cause an organic traffic drop?

They have stopped, with no changes to the site. I have no idea why. Thank you for the offer though.

It seems to have stopped with no changes to the site. I have no idea why.

What I want to know is why Google is finding these pages at all. I can normally look at linked from and find any problems. But if these are not linked from anywhere why is Google finding them?

From Moz-

Since search engines keep different metrics for domains than they do subdomains, it is recommended that webmasters place link-worthy content like blogs in subfolders rather than subdomains. (i.e. www.example.com/blog/ rather than blog.example.com) The notable exceptions to this are language-specific websites. (i.e., en.example.com for the English version of the website).

For your second question-

As long as you are getting conversions that is all that really matters. It doesn't matter if it is coming from your domain or subdomain.

If I was in your position I would try to get it integrated into my site as soon as possible that way you are leveraging your existing domain authority. It is much easier to rank a page that is tied to a good domain (assuming you have a good domain) then it is to start from scratch then move.

I would not recommend putting anything on your site that Google can see but not your customers. From- https://support.google.com/webmasters/answer/66353?hl=en

Hiding text or links in your content to manipulate Google’s search rankings can be seen as deceptive and is a violation of Google’s Webmaster Guidelines. Text (such as excessive keywords) can be hidden in several ways, including:

• Using white text on a white background
• Locating text behind an image
• Using CSS to position text off-screen
• Setting the font size to 0
• Hiding a link by only linking one small character—for example, a hyphen in the middle of a paragraph

Personally I hate calling, I will always choose to send an email or do live chat. Have you taken a look at live chat?

I actually responded back with some more questions and a new person responded with this-

"I understand that you've switched your non SSL website example.com to a secured website https://www.example.com and you want to verify that version in order to use the Site Move feature.The reason you are being redirected to the dashboard is because Bing Webmaster Tools will identify your site thru the domain therefore the SSL and non-SSL version of the site is basically the same in Bing Webmaster Tool. If you already have 301 redirects set to your pages then there's no need to use the site move feature. The permanent redirect that you've placed should already be sufficient for Bing to change your site to http to https."

I have had any problems just leaving it as it is. Google on the other hand has dropped a few percentage points.

Have you ran it through the Panguin tool to check and see if they have gotten any penalties? Did they have traffic and lose it? Or just never have traffic?

There was supposed to be an update on August 26th. I see other posts asking with no Moz response. I am hoping if enough of us ask maybe someone at Moz will respond.

I would put the content in the sitemap, and once the cars are gone I would remove the items from the sitemap and put up 301 redirects to either the car category page or a similar page. The article below does a pretty good job explaining.

http://moz.com/blog/how-should-you-handle-expired-content

This is the best I could find to so someone who had a similar problem with Joomla-

"In the premium version you can slow down the crawl rate under 'speed' in the configuration. In the free lite version, you can crawl the site and then right click on any URLs with a 403 response and press 're-spider'. The server will generally then allow you to crawl these pages (and return a 200 ok response) as you're not requesting too many at once, so you might have to re-spider them individually."

On the 1/11 report all four websites dropped, and starting on 2/12 they all dropped a few more times. These are all large companies who are completely white hat. Was something changed? The reason I asked is all of our linking C-Blocks dropped as well. Mine dropped from 114 to 42 and I have no idea why. All of my competitors dropped as well, is this related?