Backlinks remain a major ranking signal for search engines, but their role is evolving. Google now systematically filters out artificial link schemes, and unlinked brand mentions are gaining weight in AI-generated results. Measuring the quality of an incoming link today requires cross-referencing several criteria that simple domain authority no longer summarizes.
Backlinks filtered by Google: what anti-spam updates concretely change
Google’s anti-spam policies, updated on August 28, 2026, explicitly list practices considered “link spam”: link purchases, excessive exchanges, automated links, and certain links inserted in guest posts or paid press releases. The scope now extends to generative content and manipulation of AI responses.
The algorithm no longer treats suspicious links on a case-by-case basis. Google automatically detects and filters large-scale spam schemes, rendering volume strategies obsolete. A link profile predominantly composed of sites thematically unrelated to yours no longer conveys value and may trigger a manual action.
For sites building their link-building strategy, specialized platforms allow for structuring link acquisition within a coherent editorial framework, such as https://www.ilinks.net/, which connects advertisers and publishers around contextualized content.
Criteria for a quality backlink: comparative table of useful link versus filtered link
Not all incoming links produce the same effect on natural referencing. The table below contrasts the characteristics of a backlink that strengthens your positioning with those of a link that Google may neutralize or penalize.
| Criterion | Useful backlink | Filtered or penalized backlink |
|---|---|---|
| Source site theme | Close or complementary to your field | Unrelated to your activity |
| Editorial context | Link integrated into written content, with informative value for the reader | Link placed in a footer, sidebar, or directory list without content |
| Link anchor | Diverse and natural (brand, URL, long-tail expression) | Over-optimized, exact keyword repeated across multiple sites |
| Link attribute | Contextual dofollow, possibly nofollow on authority sites | Automated links, blog comments, forum signatures |
| Acquisition frequency | Progressive, regular over time | Sudden spike of dozens of links in a few days |
A contextual link on a thematically close site is worth more than ten generic links. The consistency between the source site’s content, the anchor used, and the destination page forms the foundation of the quality perceived by algorithms.
Brand mentions and backlinks: two complementary signals for visibility
AI-generated results (AI Overviews, search chatbots) change the game. According to recent analyses reported by several specialized sources, unlinked brand mentions correlate more with visibility in AI responses than traditional backlinks. Google and language models identify a brand mentioned in a relevant context, even without a hyperlink.
This does not mean that backlinks lose their usefulness in traditional SERPs. However, a strategy that only aims for hyperlink acquisition misses an emerging signal. Here are the elements to combine:
- Dofollow backlinks from high authority thematic sites, inserted in in-depth articles or case studies
- Brand mentions (without link) in media, specialized forums, and industry publications, which feed recognition by AI models
- Diversification of link anchors to avoid over-optimized profiles that the algorithm detects as artificial
Combining incoming links and editorial mentions covers both traditional SERPs and AI responses. Sites that appear in AI Overviews are often those whose brand is regularly cited in varied contexts, beyond just the simple backlink.
Sustainable link-building strategy: practices that withstand Google updates
The automated filtering of artificial link schemes makes certain tactics risky. Large-scale reciprocal link exchanges, private blog networks (PBNs), and massive guest posting campaigns on sites without a clear editorial line are among the practices that Google now systematically identifies.
The approaches that maintain their effectiveness share a common point: they produce content that deserves to be cited.
- Publishing original data (surveys, market analyses, benchmarks) that other sites naturally pick up with a source link
- Proposing editorial collaborations to sites whose audience overlaps with yours, with a genuine informational contribution for their readers
- Monitoring unlinked mentions of your brand and contacting authors to turn these citations into backlinks, a low-risk, high-conversion method
- Analyzing broken backlinks of your competitors to offer your content as an alternative to the concerned webmasters
Regularity of acquisition takes precedence over volume. A site that gains a few relevant links each month builds a profile that algorithms interpret as organic. In contrast, a campaign concentrated over a few weeks generates an alert signal.
Google’s anti-spam policies now cover a broader spectrum than before, including attempts to manipulate AI responses. Building a solid editorial presence protects better than accumulating links. The backlink remains a pillar of SEO, provided it is part of content that offers real information to the reader who clicks on it.