SEO Mistakes & Best Practices

- If you want to disavow links to several subdomains of a main domain, you need to submit a disavow file for each subdomain.
- Once you have disavowed some links, you cannot influence the rate at which crawlers will revisit the pages containing those links, since you don't control these sites.
- The sooner you disavow problematic links, the better, be proactive.
- Disavowing a site covers both www and non-www versions of the URL.
- If several spammy links come from the same website, don't be cherry-picking, consider disavowing the whole site.
- Links from non-spammy, but irrelevant sites, don't harm your rankings, you don't need to disavow them.
- If a link is disavowed, then its anchor text is ignored too.
- NOFOLLOW links don't harm your rankings, but if they are coming from spammy websites, they could be changed into DOFOLLOW links, therefore, consider disavowing them preventively.
- Duplicate entries in a disavow file are not an issue.
- Unexisting URLs in a disavow file are not an issue.
- No human begin is involved in the disavowing process.
- Submitting a disavow file does not trigger a manual review of your site.
- Google does not read notes in the disavow file.
- When you move a site to a new domain name and implement some redirects, consider moving the disavow file to the new domain too.
- Think twice before removing entries from your disavow file, such links could come back.
- Disavowed backlinks can still appear in Google Search Console.
- Google works proactively to neutralize spammy websites, however, it does not mean it will catch all spammy website pointing to your site.
- Disavowed links impact many algorithms, not only Penguin.
- It is not because someone disavows your website that Google will interpret this as a negative ranking signal
- Disavowing a domain also disavows all subdomains.
- The more specific rule (longer URL) overrides the less specific rule (shorter URL)

About Removing Manual Penalties

- Wait a day or two after you have submitted your disavow file before sending a reconsideration request.
- You don't need to have disavowed 100% of your problematic links, but you need to show a good faith effort.
- Google must believe that if they remove the penalty, you are not going to create spammy backlinks to your site again.
- All reconsideration requests are quickly reviewed by human beings, if it takes times, then it means Google needs to proceed with further verifications.
- You cannot overcome a penalty by getting more good links only.