Backlink

The original insight was that a link is a citation. If a page is worth referencing, people reference it, and counting those references gives a measure of standing that the page cannot award itself. PageRank formalised that and it is the reason search stopped being trivially gameable by keyword stuffing.

What survived is the principle rather than the arithmetic. Modern ranking uses far more than link counts, and the original algorithm has not been the deciding factor for a long time. But the underlying idea, that references from elsewhere are evidence a page cannot manufacture about itself, is still load bearing.

Which is also why relevance matters more than volume. A citation from a site in the same field, read by the same people, is evidence. A citation from an unrelated directory is not evidence of anything except that a directory exists, and the systems that evaluate links have had twenty years to learn the difference.

rel="nofollow" arrived in 2005 as a way to stop comment spam from being worth posting. For fourteen years it functioned as an instruction: the link was not to be used for ranking, full stop.

In 2019 Google added rel="sponsored" and rel="ugc" and changed how all three are treated, from a directive to a hint. Google now decides whether and how to use the link rather than being bound to ignore it. The practical read is that a nofollow link from a major publication is not worthless, and it never really was in terms of traffic and awareness.

The attributes still have an obligation attached. Paid or sponsored placements are supposed to carry sponsored or nofollow, and links generated by users, such as comments and forum posts, are supposed to carry ugc. Failing to mark a paid placement is what turns it from an advert into a link scheme.

For agency work this is worth knowing precisely, because it is frequently misquoted in both directions. Nofollow links are not pointless, and paid links are not fine because they are nofollow rather than because they are marked.

Buying links that pass ranking signals is against Google spam policies. It has been for many years, the policy is public and unambiguous, and enforcement is real, arriving either as a manual action or as an algorithmic devaluation that produces no notification at all.

The part that matters in a proposal is where the consequence lands. The penalty attaches to the client domain. The agency that arranged the links is not the one whose organic traffic disappears, and is frequently no longer the agency by the time it does.

That is an asymmetry worth stating plainly and in writing, because plenty of competitors will be quoting a monthly link quota without mentioning it. A client comparing two proposals, one promising fifty links a month and one promising fewer, is comparing two different risk positions and usually does not know it.

Cleaning up afterwards is also expensive and slow. Disavowing, requesting removals and waiting out a reconsideration request is months of work that produces no growth, and it is work the next agency inherits.

The approaches that hold up look less like outreach and more like publishing and product. Original data nobody else has, a tool that solves a real problem, a reference page comprehensive enough that people cite it rather than rewrite it. Things that give somebody a reason to link without being asked.

That is slower, harder to schedule and much harder to show in a monthly report, which is a large part of why link quotas remain popular. A report saying twelve links acquired is legible. A report saying we published a dataset and it has been cited eleven times in four months is better and takes four months to say.

Digital PR is the honest middle ground, and it works when there is something genuinely newsworthy underneath. It fails when the story is manufactured, because journalists are the specific audience most practised at recognising a press release built to obtain a link.

Where the links point matters as much as getting them. Homepage links are the easiest to earn and usually not what the ranking pages need. A link to the page you are actually trying to rank is worth several to the front door, and internal linking is how standing that lands on the homepage reaches the rest of the site.