| grey hat | Grey hat SEO is the practice of SEO techniques that fall between white hat and black hat SEO. Much of SEO conducted could arguably be said to fall within the area of greyhat SEO. |
| keyword research tools | platforms which help you to discover which keywords you should be targeting based on search volumes and search trends. The most commonly used is Google AdWords Keyword Planner. |
| sandbox | The Google Sandbox is an algorithm that has allegedly existed since 2004, a filter that potentially affects new websites and/or links. |
| duckduckgo | A search engine that was founded September 28, 2008. It is often praised for its heavy focus on user privacy and a lack of filter bubbles (search personalization). DuckDuckGo relies on more than 400 sources to serve its search results, including vertical search engines, its own crawler, DuckDuckBot, Bing, and Yandex. In 2016, 4 billion searches were conducted on DuckDuckGo. |
| seo pruning | The process of improving a website by removing content. |
