How to create Tags functionality of a forum same as stackoverflow?
19197
Input field for Tags separated by comma
46020
Automatically determine tags while writing a question
132715
Create a tag homepage/FAQ
103859
Is there a description of Stack Exchange/Stack Overflow sites?
35575
Automatic tag suggestions
156434
Tagging multiple questions at the same time?
93665
Is there a way to see questions with a certain tag from all Stack Exchange sites?
66356
Can I place a comment inside a tag in ASP.NET?
71649
Ability to add tag to Interesting/Ignored by clicking on it
147570
Mark questions as duplicate of tag wiki
21351
Could we make tags imply other tags?
51972
Can I have a link to the "ask as question" page with the tag field pre-filled?
100090
Why don't we add a question with the same tag on multiple Stack Exchange sites?
110284
Is it possible to make up HTML Tags?
117963
Select and Display 'Suggested Tags' for All Posts Based on Related Questions (or other logic)
18056
Are there any clones/alternatives for running a Stack Exchange style Q&A site?
5875
How do I correctly tag my questions?