Backlinks & SEO, explained straight.
Backly is an independent knowledge base by Sander Nilsen. It separates what is legal from what breaks Google's policy, compares every tactic side by side, and cites the sources so you can check the work — 138 guides and counting.
Sander Nilsen — SEO consultant & founder of Backly, Norway
I have spent 10+ years doing SEO and link building for brands and agencies. Backly is where I write down what actually works, what breaks Google's guidelines, and what the data really shows — read more about how I research.
Popular guides
The pages readers start with most — from the basics to buying links without getting burned.
Browse by topic
Nine pillars covering everything in backlinks & link building — each a source-checked hub with its own guides.
- Buy Backlinks: The Buyer's Guide
- PBN Backlinks: Buying, Selling, and Why Google Treats Them as Link Spam
- Sell Backlinks: Platforms, Methods, Policy Risk, and What Actually Sells
- Ahrefs vs Moz: Which Backlink Tool Wins?
- Link building software: compare the leading tools by features, data size, price, and accuracy
- Backlink monitoring tools: compare accuracy, features, pricing, and data coverage
- Link Building Experts: Agencies Compared by Cost, Link Type, Turnaround, and Reputation
- White label link building
- Link Building Pricing: Agency, Per-Link, and Monthly Retainer Cost Comparison
Primary sources first
Every page starts from Google Search Central and independent SEO research, not vendor marketing.
Comparative, not promotional
Tactics are scored on policy risk, cost and durability — side by side, with real expert positions.
Everything cited
Claims link out to the source. No sponsored rankings, ever.
From the blog
Latest analysis and updates.