Bookmarkz

Bookmarkz is a 100% free service that helps you add "one-click social bookmarking" links to your blog or website. Choose from thirty eight different popular social bookmarking properties and build the perfect bookmarking widget for your website today. Thanks to Bookmarkz it's never been easier to add bookmarking links to your website.

UPDATE: Bookmarkz is now offering support for 94 unique social bookmarking services. Yikes I didn't even realize there were that many options.