I'm looking for a script that will do something like the del.icio.us tags. Basically I have a long list of tags (800 or so) and I want to populate an edit box or the like that can be later used as a search string. Ideally this would tie in with WordPress's tagging system, and indeed the WP 2.7 "Choose from the most popular tags" option in the "Add New Post" page is pretty close, so if anyone knows how to use in the front end, it would be very, very helpful!
so, basically - you want to dynamically offer a list of tags to select from in order to build a search? this should not be too hard to accomplish - essentially, you need to do a query that gets your top... say, 50 tags sorted upon their 'power', in something like a json list. it won't even have to be AJAX, the data is already available so lookups can be instant array searches as they type. in fact, i'd use such a plugin on my own wordpress blog also and i'd probably do it (when i can get around to it and if there are no plugins that do this already--have you checked?). unfortunately for you, - my blog uses mootools as the framework (not prototype/jquery that the mainstream blogs add) so even when / if I write such a hack, it probably won't be published or of any use to you...