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.
Regarding the inbox notification area.
For reporting 404-Not Found errors you've encountered on Retrocomputing or discussing the error page itself.
For questions and discussion regarding a specific answer posted on the Retrocomputing site.
Regarding multiple answers from a user to a single question.
Regarding the use of images on the site.
For questions and discussion regarding expanding the scope of this site.
Regarding the chat room for the site
Regarding questions that have been deleted from the Retrocomputing site.
Regarding the application of tags of questions.
For questions specific to votes on a post.
For questions and discussion about the Retrocomputing Meta site itself.
For questions regarding user accounts on the Retrocomputing site.
For questions about the process of asking questions.
For questions and discussion regarding recent activity on the site.
awarded to encourage and incentivize positive community actions within the site.
a measurement of a user's contributions to the site. The extent to which the community "trusts" that user.
For the process of identifying and closing questions that have the same possible answers as another question because they are essentially the same.
Regarding the bounty process.
For discussion of the specifics of a particular question asked on Retrocomputing.SE.
the primary way users gain reputation. It also affects the ranking of posts.
Regarding the interaction of Retrocomputing within StackExchange network as a whole
the answer the question owner thought best met their needs. This tag is for discussing issues related to accepted answers, not indicating that a question has an accepted answer.
a lightweight, plain-text, markup language. It is used on the Retrocomputing site for formatting posts.
For questions about the user interface elements that make up this site.
Regarding the search facility on the site
the norms and standards of accepted behaviour and politeness in our community. The golden rule is "Think before you post."
For questions about the various user interface and email elements used to notify users of events on the site.
For general questions and discussion regarding the site's users and user accounts.
Regarding questions that have been closed because they are off-topic or otherwise do not meet the standards of this site.
for questions specific to downvotes, the community's way of telling peers that their content could be improved. (Downvotes on the meta site may have different meaning).
For questions and discussion regarding the use of OpenId authorisation on the Retrocomputing.SE site.
the process of migrating questions that are off-topic at one Stack Exchange site to another site where they are on-topic.
the process by which users can vote to close a question.