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.
The accepted answer is the answer the question owner thought best met their needs. This tag is for discussing issues related to accepted answers, not indicating that a question has an accepted answer.
For discussion about the explicitly commercial advertising that appears on this site (if any), as well as the Community Promotion Ads which are voted on by users of each site.
For the questions about announcement of recent changes or feature applied on the network
Anything related to posting answers, their scope and style. Also about improving their content, voting on answers, editing your own answers or others' answers, etc.
This is meta-meta: questions specifically about the process of asking and posting questions.
Awarded to encourage and incentivize positive community actions within the site.
Questions about the best way to do something on a Stack Exchange site, not for questions about questions about best practices.
For questions about the public or private beta phase of a site's progress through the Area 51 site creation process.
for questions about the Stack Overflow blog, the place for official company communications as well as essays, opinions, and advice on the act of computer programming.
for questions about the favorite question feature - indicated by the star under the voting arrows on a question. For questions about favorite tags, use (favorite-tags) instead.
For questions about the bounty system, which allows users to spend some of their reputation in order to draw more attention to a question.
A standardized answer to common questions or problems. Basic troubleshooting or investigation steps to resolve an issue before moving to other one-off measures.
The chat is a place where you can actively discuss a problem or just talk in some rooms made for it. You need at least 20 reputation to talk in chat, unless a moderator grants you access when you have…
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 instructions and guidance on closing or migrating questions, and the reasons for those closures.
Comments are small addenda to each question or answer, intentionally limited in size and formatting and intended to prompt clarifying edits.
For questions about the user named Community ? present on Stack Exchange sites.
Community Wiki is a flag that can be applied to answers (and sometimes questions) which lowers the barrier for editing and prevents any rep gain/loss from voting.
about the quarterly creative commons data dumps of all public data in the Stack Exchange network Q&A sites.
For questions about the functionalities, queries, databases and datamodel of The Stack Exchange Data Explorer (SEDE). SEDE allows you to create and run queries against copies of the databases of popul…
refers to all questions deleted from Stack Exchange sites. You can also use this tag along with [specific-question] and [meta] to ask why a specific question on Meta Stack Exchange was delete…
for questions regarding the design of the Stack Exchange websites; e.g., for issues with the layout.
For questions about the process of editing, how edits work, and other general inquiries about the edit system.
Elections are held to choose moderators for all graduated sites and some long-term beta sites.
Etiquette is the norms and standards of accepted behavior and politeness in our community. The golden rule is "Think before you post."
referring to the process of identifying and closing questions that are duplicates of another question.