Vincent Courson, Google Search Outreach, has written a blog post about Google’s search indexing problems of late, how it fixed them and lessons it has learned. In the post, Google explained some of the recent indexing issues the company had over the past few months. This includes the indexing issue with new content from last Thursday, a similar issue from last May and Google de-indexing sites from back in April.
Sometimes Google may remove a featured snippet from showing in the search results because it doesn’t comply with its own internal policies or guidelines. Google currently does not notify webmasters when such a removal happens but Danny Sullivan from Google said the company is considering doing so.
Google has stated that hosting content in a subdomain or subfolder of another entity’s site is not against its guidelines, but that it is improving its systems to recognize that content and treat it accordingly. The statement was delivered via the Google Webmasters Twitter account.