Wow! Yet another cool but essential tagging related feature from Flickr. Go Flickr go! We need these features in other tagging apps.
From Flickr: News.:
We've added a new way for you to manage your ever-growing list of tags. If you go to your tags page - you'll see a new link in the right-hand column to "edit, replace or delete your tags".
The cool thing about being able to edit your tags from here is: say you select that you'd like to edit your photos tagged with "vancouver"... when you use the edit form, you can either a) edit the spelling, b) change "vancouver" to a completely different tag, or c) add more related tags to every photo already tagged with "vancouver", like "british columbia" or "canada".