Heyla! The other night I found addtoany.com, and gave my GeekLog sites little links within the articles for users to submit them to their online bookmarks.
Here's the code for the link taken from twistedlibrarian.com - replace sitename and siteurl with your own details:
Text Formatted Code
<a href="http://www.addtoany.com/?sitename=Twisted%20Librarian&siteurl=http%3A//www.twistedlibrarian.com/&linkname={story_title}&linkurl={article_url}&type=page">Add this review to any online bookmarking service</a>
Placed in storytext.thtml and featuredstorytext.thtml, this fills in the title of the page and its URL. You could probably create a standard link for all GeekLog sites by extending this method to cover the site name and home URL, but I haven't tested this yet.
See it in action at twistedlibrarian.com - the links at the top-right of each story will add that particular story to your online bookmarks service (all services that I know of are supported).
Silly browser RPG: improbableisland.com!