Inline Tag Thing allows you to add and remove tags on posts, inline, using magical AJAX powers.
Inline Tag Thing allows you to easily remove tags from posts, and add new tags to a post. It provides a text box and button which allows adding one or more tags (For multiple tags, enter a comma separated list), and existing tags have a - link which will remove a tag from a post.
To perform these manipulations, you need to have the permissions to edit the underlying post. If you don't have edit permissions, the box will not display.