Inline Tag Thing allows you to AJAX-ly add and remove tags on posts (at least, for the posts you have the permissions to edit.)

It works well with small tag sets (collections of, say, 100 tags or less); but starts getting a bit unwieldy with larger sets (like.. err.. mine (: I have about 350 tags on my posts).

Basically; you click on the names of tags, and a list of posts that match any of the tags is retrieved. If you click on the name of a tag a second time, then it’s removed from the list of tags and the results are updated. It uses fandangled AJAX stuff so it feels shinier than the ye olde way of doing things.

Anywho, let me know how useful you think this is on the scale of “Meh” being Meh to “OMGZ I want one” being not-Meh. Eleven is.. uh.. better than cheese.

(There’s a download, and a caveat or two here: http://www.neato.co.nz/archives/2005/11/28/ultimate-tag-warrior-288/)

Ultimate Tag Warrior 2.6 is yours for the taking!

If you have a tag list, that uses the “superajax” format, then magical* things will happen.

* not really magic; and pretty much completely deterministic.