Del.icio.us is a popular social bookmarking service. They recently announced the beta release of a new private saving feature.
Go to your settings, on the right hand corner under the subheading Experimental, you will find Privacy option. Check the box “allow private saving of bookmarks?” and you are done. Now whenever you want to keep a bookmark private, juts select the “do not share” box beside the link.
The whole concept of social bookmarks was the ability to share, search and tag what other users are bookmarking. Adding Privacy feature will provide some useful and necessary to your links. See more del.icio.us tools.