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.

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posted to questions.
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For questions concerning area51 proposals.
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About asking questions on Academia Stack Exchange.
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Systematic biases in the Academia.SE site and community, e.g. in answering questions in an idealized vs. realistic way.
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About the chat room of the site and its features.
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Regarding the predefined and custom close reasons shown to users in the "vote to close" interface. (Use [closed-questions] instead if asking about a question that has been closed.)
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posted under answers and questions.
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On the community comprising users of Academia.SE, its demographics, etc.
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a flag that can be applied to answers (and questions) which lowers the barrier for editing and prevents any rep gain/loss from voting.
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For questions about the removal of comments--could refer to when or why a comment is to be removed.
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About removing content from Academia or Academia meta.
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Questions about web and graphic design of Academia Stack Exchange.
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About editing and modifying content on Academia or Academia meta.
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about elections to choose moderators for the site, which happens once each year.
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