| link rot | Noun phrase. The process by which the destination pointed to by a link vanishes. Either the destination is moved to a new URL without a supporting redirect or the document is simply removed from the Web. If a random user clicking on the link can no longer reach the intended destination the link is rotten. |
| offpage seo | Off Page optimization refers to Google ranking factors and signals that are outside of your direct control (not on your website). The most popular offsite optimization technique is link building. Some other types are reviews, social media and citations. |
| opt-out | Marketing initiatives in which a user chooses not to participate. |
| link laundering | Noun phrase. The process of pointing large numbers of low-quality links at intermediary Websites which in turn link to primary destinations, consolidating the low PageRank of the low-quality links and converting it into higher PageRank. Sometimes referred to as Link Layering, Link Pyramidding, and/or PageRank Funneling. |
| absolute path | When a complete page URL is used instead of just using a part of it. |