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.
Indicates that the feature request will not be implemented, or that a bug will not be fixed at present time.
For questions or issues surrounding login to this site.
Questions about suspected user spam, the Spam Flag or combating spam as a community
For issues with how Stack Exchange sites look or work that are specific to Google's Chrome browser.
for questions about posts that ask for/give hints.
Ceiling and floor of the number of characters you can enter into various slots
a text which is hidden until you move cursor above it. It might be useful when for separating full solution from a hint.
From Oxford Dictionaries, paraphrasing to suit the needs of *this site*: "A website or web page on which (in our case) M.SE records opinions, links to other sites, etc. on a regular basis".
Per-site lists of tags that cannot be created.
the act of temporarily blocking the account of a specific user. However, circumstances regarding a particular suspension are private matters between the user and the moderators a…
to be used for the Official Stack Exchange application only. The app is available in the App Store, for iOS 7 on iPhones only. When posting bug reports, please specify the app's version.
For questions about various userscripts and bookmarklets.
for questions about the official Stack Exchange Android App
For questions about single users having multiple accounts.
to new users and fosters and community spirit among existing ones.
General questions about users and user accounts.
the percentage of questions for which the user has accepted an answer.
a process which helps cleaning the site by deleting some questions. Criteria for auto-deletion are based on low score and age of the question.
for questions involving the 'Front Page' - the list of top questions with activity
The undisclosed algorithm through which all new questions are passed to determine if they can be posted on SE.
fetched and displayed on the Stack Exchange network. This is not for general Gravatar support inquiries.
a user-generated list of related questions shown when viewing a question. Its content comes from questions that users have linked in the question, their answers, or i…
For questions and requests to merge multiple Stack Exchange accounts of the same user.
Locking a question prevents answering, editing, commenting, voting, closing, and reopening. Answers must be locked separately and may still be voted upon. Only diamond moderators may lock posts.
For questions regarding the badge tracking functionality in the user profile area.
For questions related to defining own macros (using \newcommand and similar commands) in MathJax.
When your question gets the community to have a vote
for questions about the CSS styles used in Marthematics SE.
For every user, the reputation from the main site is shown on meta. However scores of the posts on meta are still stored, so it is possible to obtain reputation-based badges on meta (mortarboard, tag …
distinguish humans from bots.
"The Dupehammer" refers to the ability of tag gold badge owners to unilaterally close and reopen duplicates which were asked in tags of which they have a golden badge.
websites copying content from other websites. Use this tag for questions related to sites copying contents from math.SE. (In particular, if this is done without proper attribution.)