Searching using tags has been on my list of things to do for a while now. I’ve been playing with some things; and I’ve put together an experimental grade search via tags. It lives here.
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/)