As Google determines page rank based on the number of links attached to a website, importance of links has improved a lot in recent times. But I am glad that
SEO experts has come up with some of the most convenient and effective ways to build links, such as directory submission, articles submission, social bookmarking, forum posting, blog commenting etc. that can be utilized to boost the count of links. But the point I want to get clarified is how links from niche sources are more lucrative than general links and does they really help in boosting up ranking and traffic?