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 about answers that have been accepted by the question owner, presumably because they considered it the best answer.
For questions about the quality of answers on the main site.
Questions about answers: how to answer, whether specific answers are appropriate, etc.
For questions about asking questions on the main site.
For questions about badges, the tokens added to a user's profile as rewards for certain achievements on the site.
Questions asking for nominations for the best answers and/or questions submitted during a specified period.
Questions about the concept of a community-run Literature Stack Exchange blog.
Questions about the bookmark question feature, indicated by the bookmark icon under the voting arrows on a question. Previously known as "favorite" questions.
Questions about the bounty system, which is a way to get additional attention for a question by offering some of your own reputation for great answers.
Indicates you've found an erroneous or unexpected behaviour in the system that needs to be fixed.
Requests to remove a tag, known as 'burnination'. For requests to synonymize/merge a tag, use the [retag-request] tag instead.
Questions about the real-time, stateful web chat that is a part of every Stack Exchange site.
General questions about questions that have been closed because they are off-topic or otherwise do not meet the criteria defined in the FAQ.
For questions about close reasons, such as how to choose the correct close reason, proposals for new close reasons or improved wording of the existing close reasons, etc.
Questions about the process of closing a question.
Questions related to comments, i.e. the small addenda to a question or an answer.
Indicates a post used for submitting and voting on Community Promotion Ads. For discussion on these ads, please use the [advertising] tag.
Questions about community wiki posts — how they work, when to use them, etc.
The Stack Exchange Data Explorer (SEDE) allows you to create and run queries against copies of the databases of popular Stack Exchange sites.
Questions specifically about answers that have been deleted.
Questions specifically about questions that have been deleted.
The question you're asking is designed to solicit opinions or best-practices on a particular topic, with the goal of reaching community consensus.
Questions related to down votes / downvotes, such as downvote etiquette, badges related to downvoting, etc.
For use on questions about the closing of questions as duplicates and site policies on when to close a question as a duplicate or not.
Questions about the process of editing, how edits work and other general inquiries about the edit system.
Questions about elections, which are held to choose the moderators of this site.
For questions relating to proper etiquette on Literature SE in any aspect of participation — posting questions, answers, comments, chat messages — or moderation — flagging, editing, tagging, reviewing…
These questions are the most frequently asked and answered questions on Meta.
for proposals for new entries for the FAQ repository on this site.
A special moderator-only tag to mark important meta discussions. A question with this tag can be seen on the main site in a special sidebar in the questions list and when viewing individual questions.
You have an idea for a new feature, or for a change to the existing functionality.
Questions about the flagging process, how flags are handled, etc.