Social bookmarking allows to access bookmarked site anywhere, from any device with an internet connection. Search engines will often list results from business directory sites. Therefore, if your site bookmarked, this is an extra opportunity to show up in search results.
Business listing enables link profile diversity, trust and authority, relevancy, referral traffic and quick way of generating links to supplement time consuming blogger outreach and content development activities. Business submission does not save the resources themselves, merely bookmarks that reference them, i.e. a link to the bookmarked page. Here are the list of useful social bookmarking, directory submission, news and business listing sites: