Backlink Building for Startups: What Actually Works in 2025

Okay so I wasn't planning to write another backlinks post. Google keeps saying they matter less. Yet every time I look at actual data - my own sites, client sites, SEO studies - links are still the biggest factor. ChatGPT and Perplexity use the same signals too. More legit sites linking to you, more visibility. That part hasn't changed.

What changed was March 2024.

Google pushed this update. Massive spam crackdown. I remember the exact day because I was on a call when the reports started coming in. Three sites I was loosely involved with lost 90% of their traffic within a week. Just... gone. One was making decent money from affiliate content. $40k/month-ish. Dead overnight. Owner tried everything to recover. Didn't work.

The usual suspects got hit. PBNs. Guest post farms. Expired domain schemes. Stuff that kinda worked for years suddenly didn't.

Leaves startups in a weird spot. The old playbook? Mostly useless now. I've been trying to figure out what actually still works for the past year. Here's where I've landed.

What doesn't work anymore (RIP)

Some of this feels obvious in retrospect but people are still trying it.

PBNs are dead. The whole "buy expired domains, spin up fake sites, link to your money site" playbook. Google's been chipping away at this for years but now they're actually catching people. I know three agencies that built their entire business model on PBNs. Two pivoted to something else. One just... shut down.

Guest post farms are done. You know the ones - blast generic 500-word articles across sketchy blogs, stuff the anchor text with your keywords. This worked embarrassingly well for maybe a decade. Not anymore.

Paying for links without disclosure will burn you. If money changed hands, you need rel="sponsored". Seriously. The penalty for getting caught is worse than whatever juice that link was giving you.

Link exchanges at volume are flagged. Doing the occasional "I'll link to you if you link to me" is fine. Do it systematically across 50 sites and Google treats it as a scheme.

Those "5000 directory submissions for $50" Fiverr gigs? Actually harmful now. Tested this on a throwaway domain I didn't care about. Traffic dropped 40% over two months. Oops.

Basically anything that looks manufactured. Google's thesis seems to be: they want links that a human would actually create because they found something useful. Novel concept.

Digital PR (the best ROI right now)

Took me a while to come around on this one. Sounded like marketing fluff. But every SEO survey ranks it number one for ROI and my own experience backs it up.

The idea: create something a journalist might actually want to write about. Pitch them. Earn links from real publications.

"Newsworthy" sounds intimidating. It's not. I've watched these work: Pull some data from your users (anonymised) and publish findings. Survey people in your industry - 100 responses is honestly enough to call it "research." Hot take on something trending. Build a free calculator.

One annoying thing: the platforms keep changing. HARO got acquired and basically died. Was genuinely sad about that one, it was my go-to. Now everyone's scattered across Qwoted, Featured, and ProfNet. Sign up for all of them. Answer queries when they come in. Be helpful. Tedious, yes. Works, also yes.

The payoff when it hits though. Client got mentioned in TechCrunch last year. Within a week something like 40 other sites picked it up through syndication. 40 links from one pitch. That's the scenario you're optimizing for.

Linkable assets (the passive play)

This is the lazy person's approach and I mean that as a compliment. Build something genuinely useful once. Let it earn links while you sleep.

What tends to work? Guides that actually go deep - not the generic "10 tips" garbage everyone else publishes. Calculators are weirdly powerful (those "should I rent or buy?" tools get linked constantly). Original research with real data. Templates people can download and use. Comprehensive resource lists.

The secret - if there is one - is just going further than competitors. Your topic has been covered a million times. You need to be the obvious "this is THE guide" that becomes someone's bookmark.

Once you publish, do light outreach. Email bloggers who write about your topic. Give them quotable stats, maybe an embed they can use. Make linking to you the path of least resistance.

My favorite thing about this approach: good assets compound. I wrote a piece in 2022 that still picks up 2-3 links every month. Four years later. That's the compounding people talk about and it's real.

The unlinked mentions goldmine

This one genuinely blows my mind. Almost nobody does it. Free links sitting right there.

People mention your brand without linking constantly. Blog posts, news articles, random Reddit threads. I found 23 unlinked mentions for one client's brand in a single afternoon. 23 potential links they didn't know existed.

Set up Google Alerts for your brand name - 30 seconds, free. Ahrefs Content Explorer works too if you've got it. When you find a mention without a link, email them:

"Hey, noticed you mentioned us in your [topic] piece - thanks! Any chance you could add a link? Here's the URL: [link]"

Tracked my success rate on these for a quarter. 60% said yes. Sixty percent! They already like you enough to mention you. Adding a hyperlink is 10 seconds of work for them.

Broken link building (tedious but legit)

The concept: find dead links on sites you want links from, make replacement content, offer to fix their broken link.

In practice: Use Ahrefs or Semrush to find 404 pages in your niche that still have external links pointing at them. Check the Wayback Machine to see what died. Build something better. Email sites linking to the dead page.

Your pitch: "Hey, this link on your site is broken - I made something that could replace it." You're doing them a favor by pointing out a problem. Much better angle than "please link to my stuff."

Fair warning though: this is tedious as hell. Response rates hover around 5-10% in my experience. But the links you do get are usually quality.

Local citations (if that's your game)

Skip this if you're not targeting a local market. If you are, it's table stakes.

Citations - your business name, address, phone mentioned together - are a major local ranking factor. They also matter for AI search visibility for some reason. Not totally sure why but the correlation is there.

Google Business Profile first. Fill out every single field. Photos, hours, services, the works. Then pester your happy customers for reviews.

After that: Yellow Pages, Yelp, True Local. Industry-specific directories for your niche. Local chamber of commerce usually has one.

One thing that bites people: NAP (name, address, phone) needs to be identical everywhere. Not similar - identical. "123 Main St" versus "123 Main Street" actually confuses the algorithms. I know, it's dumb. But it matters.

We cover this more in our backlinks guide.

The expired domain question

People ask me about this constantly so let me just address it.

Yes, Google now penalises "expired domain abuse." That's when you buy an old domain purely to steal its authority and fill it with garbage. Like grabbing an expired university domain and putting up casino content. That's spam. Honestly it always was - Google just got better at catching it.

Legitimate uses are still totally fine though. You acquire a competitor and redirect their domain to yours. You buy a domain in your niche and actually build something real on it. You merge brands after an acquisition.

The question Google seems to be asking: "Did you create something users actually want? Or are you just gaming us?"

301 redirects still pass link equity. Keep them up for at least a year. Just don't be sketchy about it and you're fine.

Budget reality check

Alright, let's talk money because nobody does.

Industry surveys say teams spend $1,000-$10,000/month on link building. Average cost for one good guest post placement? $700-$950. I've seen agencies charge $2k+ for a single Forbes contributor link.

That's... a lot if you're a startup.

Good news though: the tactics that actually work are mostly time-intensive, not expensive. Creating content people want to link to. Answering journalist queries. Finding broken links. Reclaiming mentions. All free except for your time. More on this in our startup SEO budgeting guide.

Expect to wait 2-6 months before you see real results. SEO is slow. But backlinks compound - early wins make later wins easier.

Mistakes that'll tank you

Watched plenty of people screw this up. Here's what to avoid:

Chasing quantity - Ten links from random garbage sites will hurt you more than help. One link from a legit, relevant site is worth way more. Quality vs quantity isn't just a cliché here.

Ignoring relevance - A link from a pet blog isn't going to help your fintech startup. Google looks at topical connections. Context matters.

Over-optimised anchors - If every single link to your site uses your exact target keyword as anchor text, that's a red flag. Real links have varied, natural anchor text. Mix it up.

Undisclosed paid links - If you're paying for placement, use rel="sponsored". Getting caught without it is worse than the link was ever worth.

Expecting speed - SEO is slow. Anyone promising fast rankings through links is either lying or using tactics that'll get you penalised eventually. Plan for 6+ months.

How Revised helps

So everything above works. I've done all of it. But here's the honest truth: it takes forever. If you're running a startup you probably don't have 6 months to spend on link building outreach. You've got an actual product to build. (If you're in SaaS specifically, we wrote more about this in our SaaS SEO guide.)

This is literally why I built Revised.

We find backlinks from sources that are actually trusted - Wikipedia, Reddit, Hacker News, real news sites - by acquiring domains that already have contextual links pointing at them and redirecting properly.

No PBNs. No spam networks. Nothing sketchy. Just legitimate authority transfer through proper 301s. Google explicitly says this is fine.

We handle all the sourcing and vetting and technical setup. You get real backlinks from real sources without the 6-month grind.

If that sounds useful: here's how it works or just email me.