Does SEO make a site/blog popular?

SEO is a vast field thats growing nowadays. The SEO is mainly focussed to promote the sites in offline and online. This is a kind of Technical marketting . Inorder to do you have to perceive the industry knowledge in which industry you are going to promote your site. SEO is based on lots of constrains like backlinks, referals and daily average visits. All these things are done to get indexed in google search list. But Google often changes its criterias and no one can expect their rank or predict googles algorithm. But by being loyal and making genuine post its possible to achieve unique visitors to your site or blog.