Automatically add tags from user specified tags
54452
Implicit tagging hierarchy
123872
What's the possibility of adding a "Did you mean ..." in the tagging system?
96122
Automatic tagging of releases
125808
Could the tags autocomplete widget please show more than six options?
40514
Tagging best practices
82922
Is it allowed to use other tags inside ?
134959
Change cursor over  tags?
100593
Inform users of certain tags on the existence of a new SE-2.0 site and offer to automatically post the question there instead
122614
RSS feed of your favorite tags
92655
Automatically show which tags were edited in revision history
23589
Auto-tagging MP3s
31750
How to allow certain html tags?
137870
Autocomplete tags in search box
28375
Allow wildcards in ignored/interesting tags
18674
How to create a  tag with Javascript?
85415
Filtering questions based on my Favorite Tags
124264
Force multiple lines for the name tag