Social Bookmarking is a powerful digital marketing tool which allows you to search, save and share the content which you like in your social networks. So social bookmarking is an online marketing solution to save your time and efforts. There are so many social bookmarking sites are available such as Digg, Delicious, StumbleUpon, Tumblr etc. You can use these social websites for your online and offline businesses. You can find out more on our online course.