Just thought I'd share something I've been working on: a new form field, TagSetField, for selecting tags when you're posting with the blog module, inspired by the tagging in the del.icio.us plugin for Firefox.
To make it go you can put TagSetField.php into the project's /code folder and copy the styles from tagsetfield.css into you're theme's stylesheet (they're for BlackCandy).
In blog/code/BlogHolder.php's BlogEntryForm method replace
new TagSetField("Tags","Tags", $this->Children()->toDropDownMap('Tags', 'Tags')),
to enable it for front-end blog editing.
It needs refining, but it works.
Hey, I can't see the attached files...is that not how it works? You can get the files here