| search quality rater guidelines | Guidelines for human raters that work for Google to determine the quality of real web pages. |
| focus group | A small group of people from different walks of life who gather or come together to discuss a particular subject. Sometimes its to come up with a solution for a problem. A topic of discussion of a focus group could be a product, a project, or a service. |
| link shadow | Noun phrase. The group of Websites that can only be reached via links from a Website that blocks crawling of its own pages. Link shadows may be used to intentionally hide Websites from certain search indexes such as business intelligence resources. |
| noindex | Signal to search engine crawlers to restrict a page from being indexed in search results. Commonly used for paid landing pages, outdated pages, or pages that do not provide value through search. |
| twitter | Twitter is a microblogging social network where users can post text up to 140 characters and pictures. These posts are called tweets and users communicate on the network using tweets retweets and others. |
