Quality ContentContent which is linkworthy in nature. See also: What is Quality Content? When Unique Content is Not "Unique"
Quality LinkSearch engines count links votes of trust. Quality links count more than low quality links.
QueryA request for identification of a set of assets, expressed in terms of a set of criteria, which the identified item must satisfy.
Query RefinementSome searchers may refine their search query if they deemed the results as being irrelevant.
Query-By-ExampleA search where a user instructs an engine to find more documents that are similar to a particular document. Also called "find similar."