A Domain’s History Won’t Affect Reconsideration Requests
As long as your site isn’t repeatedly receiving manual actions, the domain history won’t affect the priority or complexity of a reconsideration request.
Google Can Pass Penalties from Migrated Spam Sites
If you redirect a website that has received a manual action for spam to a different website, Google will be able to follow this and is able to penalize the target destination site if you have redirected between the websites yourself.
Only Spam Manual Actions Have Lingering Effects
Once a manual action is lifted, there will be no further consequences. The only exception is manual actions for spam, as these sites are removed entirely from the index and need to be recrawled, reprocessed and indexed again from scratch.
Only Use Disavow if WebSpam Team Would Likely Issue Manual Action
John recommends using the Disavow Tool if you think that the WebSpam Team would likely give you a manual action for the links in question. However, for most websites that aren’t actively attempting to manipulate rankings with suspicious link building practices it isn’t worth using the Disavow Tool.
No Penalty For Overuse of Fetch & Render But Limits Exist
There is no penalty for continual use of Fetch & Render, however there are some limits to the frequency with which you can use this tool.
Unresolved Manual Action Penalties May Take Years to Expire
If you ignore a manual action penalty, it may take years to expire. You should try to fix the cause, and submit a reconsideration request.
Submit Reconsideration Requests Separately For Different Subdomains
Submit reconsideration requests separately if manual actions have been received for different subdomains, and make sure the disavow files are updated for each one.
There is No Penalty For Hiding Content For Screen Readers
There is no penalty for hiding content on a page that has the sole purpose of being used for screen readers, as long as it is consistent with other content on the page. The web spam team may assess intent to deceive search engines in these cases.
Internally Duplicated Content Isn’t Penalised But Can Waste Crawl Budget
Google doesn’t penalise sites for duplicating content internally but it can waste crawl budget.