Blosxom Plugin: Digg Me!
The digg_me plugin changes each post (both RSS and HTML flavours) and adds a clickable link that takes you to a pre-populated “Submit a story to Digg” page. And fills in the URL and title for you.
The Digg Me! source code is pretty simple (mostly the same as the Reddit and del.icio.us plugins) but you’ll probably need to change the ‘$post_url’ to suit your sites permalink format. The code’s GPL'd and I’ve tested it on my own site so it mostly works.