Private blog network

A private blog network, or PBN, is a group of websites controlled by one party whose main purpose is to link to target sites to improve rankings.

Google lists private blog networks under link spam. Buying or selling links that pass ranking signals is against its spam policies as of 2026. Spam systems like SpamBrain and spam updates aim to neutralise, and sometimes penalise, these schemes.

Many PBNs rely on expired domains. They buy an old domain with past links, publish thin or generic posts, and point links with exact-match anchors to clients. That is expired domain abuse in Google’s terms when done to manipulate ranking.

Short-term bumps from PBN links often fade when systems reassess. Spam updates can wipe them out in one crawl. You may see traffic rise then fall.

The bigger risk is a manual action for link spam. If you get one, affected pages or the whole site can lose most visibility until you fix and pass review.

If you ever sell your product or raise money, due diligence will flag paid links and PBNs. You do not want growth that depends on a breach of policy.

Start with Search Console’s Links report. Check Top linking sites and Top linking text. You are looking for patterns, not a single odd link.

• Many new referring domains in days, all with thin posts that link out a lot
• Exact-match anchors like “buy time tracking software” across dozens of domains
• Sites on unrelated topics that all use the same theme and structure
• Posts that exist only to link, with spun or generic text
• Links directly to money pages like /pricing and /signup from low-quality blogs

Example: yourproduct.com sees 50 new domains in a week, each posting “Top 10 Time Tracking Tools” with the same template and an exact-match link to /pricing. That smells like a PBN or link farm footprint, not earned coverage.

1. 1

   Stop buying links

   Cancel any PBN or guest post packages. Do not add more risk.

2. 2

   Remove what you can

   Ask the seller to take links down. Keep a log of requests and changes.

3. 3

   Check for a manual action

   Open Search Console, Manual actions. If listed, it shows the type and scope. Fix, then file a reconsideration request explaining exactly what you did. Reviews take days to weeks.

4. 4

   Be cautious with disavow

   Most sites do not need it. Use it if you have a manual action for link spam or a history of paid links you cannot remove. It is a text file at search.google.com/search-console/disavow-links and cannot be undone quickly.

5. 5

   Build real signals

   Publish useful pages, get listed on relevant pages, and earn links through coverage, integrations and community work. See How to get backlinks for a small site.

A fixed profile looks like links from relevant sites over time, varied anchors, and coverage that cites your guides or features, not only your /pricing page.

• “We use ‘private’ blogs, so it is safe” is sales talk. Networks leave footprints.
• Expired domains with ‘authority’ will pass it on is a myth. Google targets expired domain abuse.
• Negative SEO through PBN links is a poor worry for most sites. Google says it ignores such links in nearly all cases.
• Tool “toxic” scores are not Google’s. Do not mass-disavow based on them.
• After a core update drop, there is nothing to fix in links. Reassess content quality, originality, usefulness and E-E-A-T, and wait for later updates.