Simply add short side notes to your site, showing a date, title, description and a link. An additional RSS feed provides easy syndication.
The "Settings" page for the Sidenotes plugin: There are many ways to customize side notes to best fit to your site.
The "Tools" page for the Sidenotes plugin: Here you can publish new side notes, edit existing ones or delete them.
The result: An example of horizontal side notes in the footer area of your site.