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As marketers and link builders, industry jargon has become second nature to us. However, we understand that not everyone is versed in these terms. That's why we've made it our mission to compile a glossary of commonly used link building terms for those who are unfamiliar with them. We'll keep updating this list too. If there are any terms that you're unsure of, or if you have any questions at all, don't hesitate to reach out to us. We're always happy to lend a hand.


301: A 301 status code is used for permanent redirection. It sends a web user from an old (usually vacant, outdated or otherwise unused) page to its new, permanent address. Search engines claim that 90 percent of link equity flows through a 301 redirect.

404: A 404 error code is a response code which denotes that a web page is unavailable. The web page could have been deleted, been moved or simply is not working.

3Ps: This term refers to the three primary kinds of risqué online content: pills, poker and porn. These terms are highly competitive and sometimes highly lucrative. They’re also risky web neighborhoods to be associated with, and are often riddled with spam, scams and malware.

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Abandoned Domains: An abandoned domain is a web address that potentially has links pointing to it, but has not been renewed for any number of reasons, and is available for purchase. The process of buying an abandoned domain and then using a 301 status code to automatically redirect to another website is a common link-building strategy.