Check out this SEO experiment for internal links from Pinterest. The post breaks down their testing methodologies and how they calculate success for these tests. They test three hypothesis

• A page linked from an internal link would have more traffic than if the page was not linked.
• Traffic increase from linking a new page should be larger than the traffic lost from unlinking an old page.
• Assuming that your new interlinking algorithm assigns scores to destination pages, linking to a page with a higher score should have a higher gain than linking to a page with a lower score.

What did they learn?

1. Pick the existing winners. If we are looking for maximum SEO sessions, picking destination pages that already do well in search results (thus driving good SEO traffic sessions) actually help boost more total traffic.
2. Existing SERP (search engine results pages) ranking is more sticky than you might think. As you might expect, when we point an internal link to a new page, the new page receives a boost of traffic from the search engines. We typically see this increase within 2 weeks. Surprisingly, when the internal link no longer points to an old page, the old page does not suffer much. (The metrics stay flat for 8 weeks.)
3. Expect fast results. We acknowledge that the time to impact for new internal links depends heavily on the domain, crawl rate, etc. With that said, we have seen the traffic shifts start as soon as within 4 days and stabilize as fast as approximately 2 weeks.

With the new desktop How-To treatment, it appears that Google has decided not to show rich results for the top spot. This is unlike all other rich results in Google Search, which have the ability to yield a rich result when occupying the top standard listing.

Similar to FAQ Schema, How-To Schema only has the ability to yield 3 rich results when ranking on the first page of Google Search. This applies to both the mobile and desktop How-To treatment.

Google’s John Mueller said that when it comes to Google measuring speed with the upcoming Google Page Experience and Core Web Vitals metrics, that sometimes individual slow URLs can potentially impact other faster URLs if Google cannot determine the speed of those faster URLs and those URL structures look similar.

Google test a three dots label that can trigger an “about this result” overlay in Google search. It shows you information like when google started indexing the site, if that site is secure, the URL and if the result is an ad or not, etc.

Google has pushed out a tweet stating that the canonical issue was effectively resolved last Wednesday, with about 99% of the URLs restored. And they expect the remaining edge cases will be restored within a week or two.

Google News Showcase announced in October is startign to roll out in Germany on the iOS app.

Google clarifies that the Passage Indexing announcement has more to do with ranking than indexing. Google has not changed how it indexes when it comes to this, it still indexes the full page.

Google’s systems will consider the content and meaning of passages when determining what is most relevant versus previously they were largely looking at the page overall. So indexing really has not changed here. It is more of a ranking change, how Google ranks content, based on what it finds on your web page.