There are a number of bookmarking tools that can help you to bookmark your own pages on multiple social sites, which is fine if you want to fill your social networks with all of your own links. The problem with this is that, by bookmarking too many of your own pages, you'll eventually be marked as a spammer by most of the social sites, and may get your account banned.

With Social Bookmark Exchange you are bookmarking other peoples sites to gain credits to have others see your site and decide if they want to bookmark yours. For social bookmarking, this gives you a huge advantage because now your social accounts will be filled with diverse, interesting pages from other users, and you will be giving other users to option to create backlinks to your pages.

Note, by bookmarking another members site this in no way obligates that other person to bookmark your site. You are only gaining credits to have your site shown to other members. Your site must still stand on it's own merits and other members will decide if they want to bookmark it - no matter how many credits you have.

Social Bookmark Exchange