Social bookmarking is a great way to add your link to the web that will help you get indexed by the spiders.  Not only does bookmarks get you traffic but also it is a great tool to help keep up with your sites.  When I get done bookmarking your sites I will give you the account names and passwords so you can update or if you like I can hold on to the information for future updates. 

For a 25 Social bookmarking campaign