Social bookmarking services have become rather popular among internet users. Besides storing bookmarks online and making them accessible from every computer worldwide they also help improving search results. People bookmark sites which are relevant and informative to them. So crap and spam are not common.
If you have not used any social bookmarking service yet I recommend the very informative article by Robin Good at Master New Media. It provides a good overview on the more popular services and compares them to each other. Well done.
Tags: internet users, Robin Good, search results