What's the Socializer? The Socializer allows you to easily submit a link to several social bookmarking systems. Instead of having a link to each social bookmarking website, you have a single link to all of them!
Oyax is a social bookmark manager. It allows you to easily add web sites you like to your personal collection of links, categorize those sites with keywords, and share your collection not only with your own browsers and machine, but also with other people
aghop.ORG allows you to relate categories on the web so others to hop your personal web and for you to discover related categories that other people find useful!
Diigo is about "Social Annotation", a superset of social bookmarking. We believe that the social annotation service provided by Diigo can really enhance your experience for online browsing and interactions, and for information gathering and sharing.