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 real time, stateful web chat that's a part of every Stack Exchange site.
the primary way users gain reputation, and also how many items are sorted to the top.
Use this meta-tag for posts related to the community-determined programming challenges that happen every now and then.
for questions referring to a non-Stack Exchange controlled entity.
for questions regarding off-topic questions, including whether or not a question is on-topic and what to do with off-topic questions.
For questions about the syntax highlighting performed inside code blocks on Stack Exchange sites.
for questions specific to down-votes, the community's way of telling peers that their content can be improved. Down-votes on meta site have different meanings.
a lightweight, plain-text, markup language. It is used across the entire Stack Exchange network for post formatting (Questions, answers, wikis, chat).
Questions about diamond (♦) moderators, their powers, and actions they have taken.
The user interface elements and web pages that make up this site.
those users who may be new to the Stack Exchange Q&A format, and generally have a low reputation score.
the norms and standards of accepted behavior and politeness in our community. The golden rule is "Think before you post."
held to choose moderators for graduated sites.
For topics regarding only a specific language or set of related languages.
for requests to replace one tag with another existing tag. It also applies to requests that one tag should be merged into another, or simply abandoned.
Questions about the licensing of content on Stack Exchange sites.
referring to the process of identifying and closing questions that are duplicates of another question.
for questions dealing with moderator actions, pages, abilities or decisions.
refers to all questions deleted from Stack Exchange sites. The tag "specific-question" should also be used when referencing a specific question that has been deleted.
awarded to encourage and incentivize positive community actions within the site.
Questions also answered by the user asking, easily marked by the shaded user card attached to the answer.
The process by which users can vote a question re-opened if it is closed due to some users seeing it as off-topic or otherwise disallowed by the /faq.
For the suggestion of improvements to the phrasing of text shown to users by the Stack Exchange engine.
Answer-invalidation involves editing a question in such a way that something addressed in an answer is lost. This is disallowed on Code Review as it disrupts the review process as specified in the He…
points that a user gets (and loses) on StackExchange for activities, which allow more (or less) privileges.
a way to get additional attention for a question by offering some of your own reputation for great answers.
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 questions about tag synonyms (how they work, who can create them, etc). Use [synonym-request] for tag synonym requests.
for questions about the entire network of Q&A sites that make up the Stack Exchange network.
For concerns regarding common issues in code often pointed out in reviews.