digg social bookmarking siteAfter clicking and bookmarking the proposed bookmark, you can also create such a button for your site for free. You will find the link to reach the page where you can create the button yourself at the bottom of the social bookmarking sites that you see in the popup. With such a social bookmarking button, your website visitors can register your desired link with link title at about 20 different bookmarking sites. A nice gadget for sites that cannot install social bookmarking plugins.
Social Bookmark