From the first breath of Search Engine Optimization,
backlinks played major role in calculating the strength of a website to get
rank in SERP’s. In early stages, backlinks are main source for search engines
in identifying the website category, website products and services information
and to compute the ranking factors of website in SERP’s.
Due to the heavy cyclone of backlink building from website
owners and webmasters, search engines got puzzled in identifing the immense
quality service or information provider, then started updating search algorithm
by implementing the updates like Toolbar Page rank, Caffine, Penguine, Panda,
etc., to modify and categorize the exact information and services for its search
users.