Social bookmarking is a powerful tool in promoting a website. But going through all of those social bookmarking sites is very time-consuming and downloading all toolbars is madness! That’s where SocialMarker.com comes in, the free service designed to reduce the time and effort needed to socially bookmark a website. The only requirement is that you need to be using FireFox when socially marking.

Requirements: Firefox Browser
Demo: http://www.socialmarker.com
License: License Free