Blosxom Plugin: add_to_delicious
The add_to_delicious plugin was inspired by an xml.com article, called Putting RSS to Work: Immediate Action Feeds, which made the very sensible suggestion of allowing you to “do things” to RSS items without leaving your aggregator. This plugin changes each post (both RSS and HTML flavours) and adds a clickable link that takes you to a pre-populated “add link to del.icio.us” page.
The add_to_delicious source code is pretty simple but you’ll probably need to change the ‘$post_url’ to suit your sites permalink format. The code’s GPL’d and running on my own site so it mostly works.