Currently 19 questions have the plugin tag.
I think we should get rid of this tag. Whenever a plugin (or extension, or add-on, …) for a specific software is needed, the question should be tagged with a tag for this specific software.
So when a question has the tags eclipse and plugin, the eclipse tag alone already implies that a plugin (or maybe a compatible software) for Eclipse is needed. The question title/body can/should make this clear explicitly.
(If we agree, I could retag those questions.)