Ability to pick a primary tag of a question
109377
Main tag of a question
93665
Is there a way to see questions with a certain tag from all Stack Exchange sites?
71649
Ability to add tag to Interesting/Ignored by clicking on it
89797
Add a selection of default tags to all metas
13845
Should we be adding tags like [beginner] to questions?
21351
Could we make tags imply other tags?
61980
Is there a way to perform a search in such a way as to exclude a specific tag?
69062
Please add a tag search functionality to Careers
104856
Can we burninate the [restrict*] tags?
4088
How to form this tag question – as a positive tag question, or a negative one?
77290
Why do we tag questions?
78317
Can newsletters take into account a user's favorite tags on that site?
95586
Have "Interesting Tags" that are combinations of tags
77512
New Div - "Hiding questions because of your Ignored Tags preferences for tags"
28583
Search favorite questions by tag
4874
Does it matter the order you tag your question
34337
How can a question be tagged with a tag synonym?