A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Questions, concerns, or suggestions about a tag or about the way tags are used on our site.
when examining what is on-topic or off-topic, and why, and how to deal with off-topic questions.
for general questions about questions that have been closed because they are off-topic or otherwise do not meet the criteria defined in the FAQ.
109 questions
For questions regarding the nature of a "question" on Cross Validated; e.g. how to ask, whether specific questions are appropriate, etc.
Questions about answers: how to answer, whether specific answers are appropriate, and so forth.
90 questions
74 questions
Questions about tag synonyms (how they work, who can create them, synonym suggestions etc).
73 questions
small addendum to each question or answer, intentionally limited in size and formatting.
56 questions
Questions dealing with moderator actions, pages, abilities or decisions.
56 questions
For questions about the process of editing, how edits work, and other general inquiries about the edit system, used in editing questions, answers, tag wikis...
56 questions
The process of identifying and closing questions that are exact duplicates of another question
the primary way users gain reputation, and also which items are sorted at the top.
51 questions
Questions related to policies and guidelines of the Stack Exchange sites.
49 questions
47 questions
the process of moving threads from one Stack Exchange site to another.
47 questions
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a measurement of a user's contributions to the site, and the extent to which the community "trusts" that user with extra privileges.
36 questions
Questions with no answers, or with answers that have zero score or less and none of these is accepted
A request to reopen a closed question, or receive further explanation of why it was closed.
33 questions
held to choose moderators for non-Beta Stack Exchange sites
32 questions
For questions about the /review path where users can view and act on posts by other users that the system thinks may need attention.
32 questions
The users' engagement within the Cross Validated Stack Exchange site
31 questions
For R related topics such as: scope, migration, markdown and guidance about how to ask/answer on the main site
31 questions
Mechanisms for displaying mathematical notation.
31 questions
"Design" refers to front-end elements, such as page layout, coloring conventions, etc.
28 questions
The scope of statistics software-related questions on Cross Validated
28 questions
For issues with ambiguous/suboptimal tags that require manual reorganization (i.e. cannot be resolved by creating a tag synonym or deleting a tag).
28 questions
For proposing and discussing new tags.
28 questions
the norms and standards of accepted behavior and politeness in our community
27 questions
a way to get additional attention for a question by offering some of your own reputation for great answers.
25 questions
the most visible portion of tag wikis. They're shown when hovering over a tag, on the Tags page, and in the autocomplete suggestions when adding tags.
25 questions
For questions about the process and etiquette of deleting existing tags.
22 questions
For questions about search and advanced search features. Also, for finding specific threads.
21 questions
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