| htaccess file | A hidden server configuration file that help to rewrite or redirect URLs on sites running on Apache. |
| co-citation | How frequently two websites (or webpages) are mentioned together by a third-party website, even if those first two items don’t link to (or reference) each other. This is a way search engines can establish subject similarity. |
| non-branded keyword | Keywords that do not contain a brand name. Most SEO campaigns have a strong focus on improving website traffic from non-branded keywords. |
| ftp | File Transfer Protocol is used to transfer files to and from a computer, network, or a website. |
| pop-under | Form of advertising that creates a separate browser window, but places it under the active one so as not to be disruptive. |
