Notes from the Google Webmaster Hangouts on the 18th of October, 2016.
Domain Redirects Should Remain for at Least a Year
Site move domain redirects should remain in place for at least a year, ideally as long as possible.
Interstitial Penalty Only Affects Landing Pages
The interstitial penalty will only apply to landing pages. Any actions which occur after the landing page visit are OK.
Interstitial Penalty Only Affects Mobile Pages
The interstitial penalty will apply just to mobile pages at the moment.
Show Googlebot the Same Teaser Content as Users
If you only present teaser content, make sure Googlebot also sees the same content, or this would be cloaking.
Mobile Pages Should Be Equivalent to Desktop Pages
Mobile versions of pages should be equivalent to the desktop pages, with the same functionality and main visible content, but the layout can be different.
JSON LD Is the Preferred Format for Structured Markup
JSON LD is the preferred format for structured markup, but Google accepts all other formats so there is no advantage in changing.
Current Sitewide Quality Score Affects All Pages
The Google sitewide quality score is applied to all pages as it is now, and not applied to pages and set when they are created.
Google Doesn't Have a Sitewide Authority Score
Google doesn’t have a sitewide authority score.
Location and Language Don't Affect Backlinks
The weight of backlinks isn’t affected by the location or language of the website.