PBNs technically still work in the sense that links from expired domains with existing authority can pass ranking signals, but the risk-reward calculation has shifted heavily against them. Google's algorithms now flag footprints like shared hosting IPs, WHOIS patterns, interlinking structures, thin content templates, and unnatural anchor text distributions far more reliably than they did five or six years ago. A well-built PBN requires separate hosting, unique registrars, distinct content strategies, and no cross-contamination between sites, which makes the operational cost approach what you'd spend on legitimate outreach anyway. The bigger problem is durability. PBN links that work today can get deindexed or devalued in the next core update, and when Google confirms a network, they often penalize every money site connected to it simultaneously. We've seen competitors lose 60–80% of their organic traffic overnight after manual actions hit their PBNs, with recovery taking six months minimum even after disavowing and cleanup. The 2023–2024 helpful content and spam updates specifically targeted manipulative link schemes, and PBNs were a primary focus. There's also an opportunity cost angle. The hours spent maintaining a PBN, creating passable content for each site, rotating anchors, and managing technical infrastructure could instead go toward digital PR, journalist outreach, or creating linkable assets that earn editorial links naturally. Those approaches scale better and compound over time instead of requiring constant maintenance to avoid detection. At Ottawa SEO, we stopped building PBNs around 2016 when the manual penalty risk became uninsurable for client work. For our own portfolio of 500+ domains, we focus on legitimate content hubs, niche publications with real audiences, and strategic partnerships. When clients ask about PBNs, we explain that the short-term ranking boost isn't worth the existential threat to their domain authority. If you're considering it, understand you're betting that your obfuscation will outlast Google's pattern recognition, and that's a bet that gets harder to win every quarter.