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.
to ask questions about this very site, a.k.a. GIS Meta. In some sense, the [meta] tag is Meta-GIS Meta Stack Exchange.
for issues using GIS Stack Exchange in Mozilla's Firefox browser
Times a question has been seen by eyeballs, or a profile has been looked over
Indicates that the post shares product or configuration change concepts during the Discovery phase. Open to receiving feedback from the Community preceding implementation.
currently under consideration, or needs further investigation.