Grey hat SEO
Grey hat. Not banned outright, but easy to tip into spam. Use with care. White, grey and black hat SEO compared
What is grey hat SEO?
Grey hat SEO is the use of tactics that are not clearly forbidden by search engine guidelines but are not clearly safe either. They usually try to speed up results, and they become spam when done at scale, done mainly for rankings, or done in a way that hides who paid for what.
Common grey hat tactics include guest posting mainly for links, link exchanges between friendly sites, niche edits where you ask for a link in an old article, buying expired domains to redirect, and clickbait titles that oversell a page. None is automatically a violation. Each has a version that is fine and a version that breaks Google’s link spam or scaled content rules.
The grey zone exists because intent matters. Google’s link spam policy says links made “primarily” to manipulate rankings are spam. One guest article for a relevant audience is ordinary marketing. Fifty paid guest posts with exact-match anchors are a link scheme.
Why grey hat SEO matters
Most SEO arguments happen in the grey zone. You need to know where the line is so you can use the safe version of a tactic and stop before it becomes a pattern Google’s systems are built to catch.
It also matters when you hire. Agencies that sell “safe” guest posts or link insertions are usually selling grey or black hat links. Read the black hat SEO page for what happens when the line is crossed, and the comparison for how to tell the three apart.
Risks of grey hat SEO
- Tactics that look harmless at small scale can be judged a link scheme or spam once they become a pattern.
- Google’s policies and enforcement change. A March 2024 update turned some grey tactics, such as expired domain reuse and parasite pages, into named violations.
- A manual action or algorithmic demotion if the tactic crosses into what the spam policies describe.
- Money and time spent on links or pages that Google simply ignores.
How to keep grey hat tactics safe
- Ask whether you would do it if search engines did not exist. A guest article that brings readers passes; one written only for the link does not.
- Never exchange money, goods or free products for a followed link. If a placement is paid, it needs rel="sponsored" or rel="nofollow".
- Watch for patterns: the same anchor text, the same kind of site, the same template, repeated many times.
- Keep anchor text natural and the linking site relevant to yours.
- Review your link profile regularly and stop any tactic that is producing links you would not want a Google reviewer to see.
Grey hat SEO FAQ
Is grey hat SEO safe?
Some of it, done sparingly and honestly, is. The risk grows with scale and with how much of the tactic exists only for rankings.
Is guest posting grey hat?
It depends on the purpose. Writing for a relevant site to reach its readers is fine. Guest posts bought or written mainly for keyword-rich links are named in Google’s link spam policy.
Related SEO terms
White hat SEOWhite hat
White hat SEO is search optimisation that follows Google’s guidelines: useful content, a crawlable site and links you earn rather than buy.
Black hat SEOBlack hat
Black hat SEO is the use of tactics that break search engines’ spam policies, such as paid links, cloaking or keyword stuffing, to rank faster.
White hat vs grey hat vs black hat SEO
White hat SEO follows Google’s rules, black hat SEO breaks its spam policies, and grey hat SEO sits in between, where tactics can tip into spam.
Guest postingGrey hat
Guest posting is writing an article for another site, often with a link back. It is fine for exposure; done at scale for links, it is a link scheme.
Link exchangesGrey hat
A link exchange is an agreement between sites to link to each other. Occasional relevant swaps are fine; excessive ones are link spam.
Niche edits (link insertions)Grey hat
A niche edit adds a link to an existing article on another site. Asking for a useful update is fine; paying for the insertion makes it a paid link.
Link schemesBlack hat
A link scheme is any attempt to create links mainly to manipulate rankings, such as buying, swapping or automating links, which is Google’s link spam.