# Private blog network A private blog network is a set of sites built to sell or pass links to boost rankings. It is link spam under Google’s policies. If you run a small site, know how PBNs work, how to spot their traces, and what to do if they point at you. Updated 2026-09-14 · Source: https://porteur.ai/glossary/private-blog-network ## What a private blog network is and why it is link spam 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. > Rule: do not buy links that pass PageRank, including from PBNs, even if the seller says they are “safe”. ## Why it matters for a small site 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. ## How to spot or measure PBN links 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. ## What to do if you have PBN links 1. **Stop buying links** Cancel any PBN or guest post packages. Do not add more risk. 2. **Remove what you can** Ask the seller to take links down. Keep a log of requests and changes. 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. **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. **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. ## Common traps and myths - “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. ## Questions ### Does PBN still work? Sometimes you see a short-lived lift. Spam systems aim to detect and ignore it, and updates can remove the gains at once. The risk of a manual action and a wasted budget outweighs any bump for a small site. ### Can you provide an example of a private blog network? A set of 100 blogs on unrelated topics, all owned by one operator, posting listicles with exact-match anchors that point to clients. They often reuse themes, bylines and ad layouts, and link to each other to look real. ### Should I disavow PBN links pointing to my site? Only if you have a manual action for link spam or a history of paid links you cannot remove. Google says it already ignores most bad links, and most sites do not need the disavow tool. ### Are expired domains safe to use for SEO? Using an expired domain to revive a past site is fine. Buying expired domains to pass their old signals to new content or to run a PBN fits expired domain abuse and link spam, and carries enforcement risk. ### What is the risk if I bought PBN links? Short term, nothing may happen. Medium term, links can be devalued in a spam update. If a human reviewer sees a pattern, you can get a manual action that hurts ranking until fixed and reconsidered. ### How do I recover if I was hit for link spam? Remove paid links where possible, document clean-up, and file a reconsideration request in Search Console. Recovery takes time. Then rebuild with content and relevant mentions you earn. ## Read next - [Google spam updates: the policies they enforce and how to stay clear](https://porteur.ai/guides/google-spam-update): See what a Google spam update enforces, the policies that trip small product sites, how to check your risk, and how to recover if you’re hit. - [Manual actions and the reconsideration request](https://porteur.ai/guides/manual-actions-and-reconsideration): Tell a Google manual action from an algorithmic drop, fix the cause, use disavow only when needed, and write a clear reconsideration request. - [The disavow tool: what it is for, and why you almost never need it](https://porteur.ai/guides/disavow-tool): You almost never need the Google disavow tool. Use it only for a link manual action or unremovable paid links. Here is how to decide and proceed. - [How to get backlinks for a small product site](https://porteur.ai/guides/how-to-get-backlinks-for-a-small-site): What to build, who to ask and how to measure. A founder’s plan to earn backlinks without spam or spend, with examples and a checklist. - [The Links report in Search Console: what it shows and what it hides](https://porteur.ai/guides/search-console-links-report): What Google’s Links report really shows, why counts differ from Ahrefs or Semrush, and two jobs it is good at on a small site. - [Link farm](https://porteur.ai/glossary/link-farm): A link farm is a network of sites that sell or swap links to pass ranking. Here is why it harms small sites, how to spot it, and what to do. Want a second opinion on links around your niche? Paste your URL into Porteur’s free check to read your site, nearby searches and rivals in about thirty seconds. Free check: https://porteur.ai/