| mobile first indexing | In November 2016 Google announced that they were experimenting with a mobile first index, meaning a stronger focus on mobile sites in algorithmic calculations. In March 2018 Google announced they were migrating some sites that followed best practice to mobile first indexing. |
| blackhat seo | SEO tactics that dont particularly follow the approved guidelines of Google or other search engines. |
| link volume | The quantity of links on a page. |
| qualified lead | If you use your website to encourage potential customers to contact you via phone call or form, a lead is every contact you receive. Not all of those leads will become customers, but qualified leads are relevant prospects that have a high likelihood of becoming paying customers. |
| meta-description tag | A short snippet (150-160 characters) that search engines display in their listings to describe the contents of a web page. |