A social bookmarking service is a centralised online service which enables users to add, edit and share bookmarks of the website pages which they like. You can use your bookmarks easily from any location using any computer which is connected to the internet.Being listed on sites like Digg and Delicious can drive new traffic to your website. Incidentally Delicious popularised the terms "social bookmarking" and "tagging." These sites offer the best type of visitor. People who reach your site from such a social bookmarking site are generally there because your website appeared in a search for topics they were interested in.
Search engines will often list results from bookmarking sites. So if your site is bookmarked, this is an extra opportunity to show Phone Number List up in search results.Being featured on one bookmarking site can often lead to people tagging your site on other bookmarking sites so you have the possibility of viral traffic. The top 5 bookmarking sites in terms of unique monthly visitors are Reddit, StumbleUpon, Delicious, Digg and Slashdot. But there are many more. Search Engine Journal has put together a list of 125 social bookmarking sites, some of which are very popular and others which are newer or somewhat unheard of.
Besides targeting the major social bookmarking sites, you will find some diamonds in the rough which are niche oriented or treated well by Google and other search engines.To get your share of the wealth which social bookmarking offers, you should leave your bookmarks in multiple sites. This might seem a daunting task but it can be automated with appropriate software such as IMAutomator.