Meta Tags to SEO is like SEO is to optimization itself, of utmost importance. The more a search engine has information about your website, the high it places the site in its search lists making it visible and accessible to a larger number of online audience. And a search engine relies on these Meta tags to get information about your website. Think your Meta tag to be as writing a PPC ad, short, straight, to the point. Your Meta tag(s) should be a precise description of what the site actually is about. For better SEO practices just furnish your Meta title once with the main keyword or two, and once in Meta description. The better you make use of Meta tags and titles, the better are your chances to reap SEO benefits and improve your SERP rankings to be spotted by search engines as well as people.