Tags
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.
For questions about the formatting option blockquote. The blockquote is often used when citing information that was written by a person/organization other than yourself.
For questions or announcements on Meta Stack Exchange about Stack Exchange maintenance work.
for questions about the top users of the Stack Exchange sites and the lists of those users.
For questions about the Winter Bash (holiday hats) to celebrate the end of the year 2016.
For questions regarding locked posts and locking functionality. Diamond moderators can lock a question or answer.
For questions about how authentication within the Stack Exchange network works. General questions about authentication are off-topic, but depending on the specific question may find a home at e.g. Sta…
Taking chunks from a source and letting no one know about it as you pass it off as your own.
Short reason, count of characters changed or motive behind why a post was edited
For questions relating to issues that arise when viewing Stack Exchange sites on an iPad.
For questions about how Stack Exchange sites are indexed and ranked by search engines.
For questions about the Stack Exchange subscription system, which will email you about new questions in your filters at a set interval of time.
ON NEW QUESTIONS. Use [help-center] instead. This is for requests to update the old per-site FAQ, which has been superseded by the help center.
Badges awarded for earning (at least) 200 daily reputation a certain number of times. These are Mortarboard (bronze), Epic (silver), and Legendary (gold).
For questions having to do with the font families, styles, sizes, etc that SE uses on its websites.
For questions relating to sharing a post or promoting the site via email, on Facebook, or on Twitter.
Generally used to describe bugs with unordered and ordered list elements.
indicates that the question is a call to arms, a cry for help, a request for assistance. The Stack Exchange network is in constant motion and therefore it's sometimes necessary to request hel…
For questions that are about how consecutive days are counted, how the consecutive-day-class badges are awarded, and other support on consecutive days.
Meta tags are tags which describe something other than the question's content--such as the author's skill level, motivation, or current take on it. Alternatively, they may be ill-defined concepts whic…
Comments posted automatically on behalf of users after performing certain actions.
For questions about a single user having multiple accounts.
For questions about how dates are handled within the Stack Exchange network. General questions about dates are off-topic, most programming questions about dates belong on Stack Overflow.
primarily used when asking questions about why you're running into issues posting questions/answers/comments on SE sites.
For questions about any options that are available under your user preferences in your profile page.
Account association is the process where accounts on different Stack Exchange sites are linked. Note that this is different from merging accounts.
For questions about contacting the Stack Exchange team, typically via the "contact us" page of each site, and the help desk product support systems Jira and Freshdesk.
Privilege page is in the form <site>/help/privileges, e.g. http://stackoverflow.com/help/privileges. Where to see the list of all privileges on the site and the privileges you have gained.
for the official Stack Exchange mobile applications only. The apps were available for iOS and Android on the App Store and Google Play store.
Abbreviations for common hyperlinks in comments and chat
for questions about expired bounties, which happens when a bounty poster does not manually award a bounty after its duration has elapsed.
A script that is run every so often to correct inconsistencies in the way a user's displayed rep is calculated initially.
locked-votes refers to the fact that you can't change your upvote / downvote after a few minutes, unless the post has been edited since, in which case you can then change your vote.
These posts are related to the international sites (non-English UI) of the Stack Exchange network.
Questions involving review bans/suspensions for folks who fail multiple review audits in a short time.
Flag weight was a measure of how well a user raises flags. The measure is no longer used anywhere on the site. Please do research before asking any questions with this tag.
Questions about answers which are added to questions well after the question was posted.