Reciprocal links versus one-way links
Updated
A reciprocal link is a link that is answered by a link back: you link to me, I link to you. A one-way link has no link going the other way. Search engines see both, and a healthy site has a mix.
One-way links
Someone links to your site because they think it is worth it: a blogger quotes your article, a local newspaper mentions your shop, a forum recommends your tool. Nobody asked for anything in return, which is why search engines value these links most. They are also the hardest to get: you earn them with content, products or services people want to point to.
Reciprocal links
Two sites agree to link to each other. Between sites that belong together, this happens naturally all the time: a wedding photographer and a venue, a club and its sponsor, two bloggers who write about the same topic. Search engines know this, and a reciprocal link between related sites is a normal link.
What they do look out for is reciprocal linking at scale: hundreds of swaps with sites that have nothing in common, only to gain rankings. Google's spam policies name excessive link exchanges as link spam.
Why a mix looks natural
Real websites collect links in different ways over time. A site whose links are almost all reciprocal, all placed in the same month, or all from unrelated sites, looks arranged. A site with some reciprocal links from close partners, some one-way links earned with good content and some links from directories and local listings looks like a site people use.
Making both work for you
- Exchange with partners you would link to anyway. Then the reciprocal link is simply a recommendation in two directions. How to choose a good link partner has a checklist.
- Keep the numbers modest. A few good exchanges a month say more than many in a week.
- Earn one-way links alongside. Useful articles, tools, data or local news give people a reason to link to you without being asked.
- Think of visitors first. A link that real people click is valuable, whichever direction it goes.