Launched in 2004, Simpy is a web-based personal and social bookmarking service. It used tag clouds to bookmark and recall your favorite places, it’s most advanced feature was the ability to share or keep prive the bookmarks. While others were drawn to the ability to save, tag and search free text notes.
Social Brand Visibility
Social Brand Visibility: Propeller
A Social Bookmarking Service, Propeller was born of Netscape. A design Similar to Digg it allowed users to vote, via bookmarking on stories and sites that visitors found useful.