I just put together a plug-in that scans your blog’s text and generates a “Flickr-like” weighted list of words you can that link into your blog’s search feature. If anyone wants to test it out, I’d be much obliged.
Both this plugin and Weighted Categories are nice, but what I’d really like is something that offers true “tag” integration into WordPress. Basically, for each post I’d like to be able to specify a list of words which are both linked to Technorati tags, and also searchable within my own blog as local tags, with a nice weighted overview as well. Oh, and I want to be able to enter these tag terms via the blog-API so that I can use ecto or another blogging client to enter the list of words.