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 your question is about site policies. Usually, new proposals for policies or questions about existing ones will have this tag
229 questions
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 regarding answers posted to challenges. This tag is not for questions about a specific answer, but for answers in general
143 questions
keywords or labels that categorize and group your question with other, similar questions.
126 questions
For questions about scoring a challenge or how to score a particular language
For meta questions pertaining to asking other questions, on main or meta.
74 questions
proposing new rules or asking for clarification on other ones.
73 questions
73 questions
a place where you can post proposed challenges for others to review.
Requests for help with, or discussion of, a specific question on CGCC.
63 questions
62 questions
43 questions
new to CGCC.
Questions about the "close as duplicate" mechanism.
41 questions
38 questions
For questions about using the Stack-exchange chat system
36 questions
For questions that relate to the quality of challenges on the main site
appropriate for PPCG.
33 questions
29 questions
either proposing or asking for clarification on winning criteria.
28 questions
For clarification of rules that apply to challenges if not mentioned by the author
27 questions
General questions about questions that have been closed because they do not meet the criteria defined in the FAQ.
27 questions
Questions and discussion related to CGCC Meta itself, not just CGCC.
24 questions
22 questions
Questions about moderation of this site, including the site moderation tools, policies on moderation and specific moderating actions taken by users
21 questions
Questions about the site's diamond (♦) moderators, along with their powers and actions
21 questions
For questions regarding code challenges and/or submissions
18 questions
18 questions
held to choose moderators for Programming Puzzles & Code Golf and non-Beta Stack Exchange sites.
17 questions