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 relating to CGCC’s (or their meta’s) 404 page. Do not use for 404 pages of other sites.
For questions about accepted answers, etiquette around accepting answers and other related questions. Note that informal site policy is to avoid accepting an answer, especially on code golf challenges
For questions about the site's community ads and other advertising on the site
For posts that take the form of an announcement, typically of significant changes to the site. This tag is often used by the Stack Exchange staff to announce site-specific changes
For questions relating to the answer chaining type of challenge. [answer-chaining] challenges should be asked on main, not here
For questions regarding answers posted to challenges. This tag is not for questions about a specific answer, but for answers in general
For meta questions pertaining to asking other questions, on main or meta.
Special symbols shown next to your reputation, which provide indicators that a user has met a specific achievement.
Our annual competition for the best contributions to the site.
was used for discussions directly related to the progression of the beta.
For discussion about a community blog.
for questions about the bookmark question feature. Bookmarking is a system that allows users to save a question to be more easily found at a later date
A way to attract attention to questions and answers by offering some of your own reputation as a reward to an answer
Indicates you've found an erroneous or unexpected behaviour in the system that needs to be fixed.
For questions about the usage of the C# programming language on the main site. Do not post questions asking for help with C# on meta using this tag.
To be used on blog posts. For posts about the blog, please use the [blog] tag instead
For questions that relate to the quality of challenges on the main site
For questions about challenges on the main site
For questions about using the Stack-exchange chat system
Scheduled events that take place in chat, typically The Nineteenth Byte
General questions about questions that have been closed because they do not meet the criteria defined in the FAQ.
For questions that relate to the reasons behind closing a challenge/challenges
For questions specifically about [code-bowling] challenges. Code-bowling challenges should be asked on the main site, not here.
For questions regarding code challenges and/or submissions. Note that [code-challenge] challenges should be posted to main or the Sandbox, not here
For questions about code golf challenges and/or submissions. DO NOT post code golf challenges themselves as questions here; those belong on the main site or in the Sandbox if you want to get feedback …
For questions about the code-trolling genre, currently an off-topic genre.
For questions about the commenting system, such as how it works and what the appropriate usage is
Indicates a post used for submitting and voting on Community Promotion Ads. For discussion on these Ads, please use the Advertising tag.
For questions about the Community Wiki feature. Community Wiki is a special mode posts can be placed in that lowers the barrier for editing, and prevents the poster from gaining or losing reputation
From questions specifically about [cops-and-robbers] challenges. Note that [cops-and-robbers] challenges should be posted to the main site or the Sandbox, not here
For questions abut the site CSS styling, typically [bug] reports with the CSS, or for questions specifically about usage of the CSS language