This plugin was built by the Maine WordPress Meetup group to make it really easy to add social network icons to your posts.
This plugin supports the following social networks:
- StumbleUpon
- Delicious
- Digg
- Designfloat
You can set this to display at the top or bottom of posts, or display it through a template tag:
socnet_display_links($post_id);
Note that the post_id is optional, it will default to the current post.
This plugin is available for download for your site.