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.
When examining the best-practices for asking questions.
when you want to draw attention to a specific question on the main site. For example, if you want to draw high-rep users to close/reopen/edit a question, if you want to discuss the…
When examining the quality of questions/answers on the site.
Questions about the copyrights of the StackExchange sites or about the posting of copyrighted material by users.
Public Service Announcments for Sports SE
tag for questions related to some other site from SE network. If you want to ask about a site proposal, use (area51) tag.
The process of migrating off-topic questions from one Stack Exchange site to another.
For questions concerning area51 proposals.
For questions concerning using images in questions, image hosting etc.
A tag for questions about the community wiki feature (regardless of whether or not the questions themselves are community wiki).
the answer the question owner thought best met their needs. Accepting is encouraged but never required. This tag is for *discussing* issues related to accepted answers, not indi…