Social media can be used not only as public relations and direct marketing tools but also as communication channels targeting very specific audiences with social media influencers and social media personalities and as effective customer engagement tools. Technologies predating social media, such as broadcast TV and newspapers can also provide advertisers with a fairly targeted audience, given that an ad placed during a sports game broadcast or in the sports section of a newspaper is likely to be read by sports fans. However, social media websites can target niche markets even more precisely. Using digital tools such as Google Adsense, advertisers can target their ads to very specific demographics, such as people who are interested in social entrepreneurship, political activism associated with a particular political party, or video gaming. Google Adsense does this by looking for keywords in social media user's online posts and comments. It would be hard for a TV station or paper-based newspaper to provide ads that are this targeted (though not impossible, as can be seen with "special issue" sections on niche issues, which newspapers can use to sell targeted ads).
8. Better Search Engine Rankings. SEO is the best way to capture relevant traffic from search engines, but the requirements for success are always changing. It’s no longer enough to regularly update your blog, ensure optimized title tags and meta descriptions, and distribute links pointing back to your site. Google and other search engines may be calculating their rankings using social media presence as a significant factor, because of the fact that strong brands almost always use social media. As such, being active on social media could act as a “brand signal” to search engines that your brand is legitimate, credible, and trustworthy. That means, if you want to rank for a given set of keywords, having a strong social media presence could be almost mandatory.
One of the main purposes of employing social media in marketing is as a communications tool that makes the companies accessible to those interested in their product and makes them visible to those who have no knowledge of their products. These companies use social media to create buzz, and learn from and target customers. It's the only form of marketing that can finger consumers at each and every stage of the consumer decision journey. Marketing through social media has other benefits as well. Of the top 10 factors that correlate with a strong Google organic search, seven are social media dependent. This means that if brands are less or non-active on social media, they tend to show up less on Google searches. While platforms such as Twitter, Facebook, and Google+ have a larger number of monthly users, the visual media sharing based mobile platforms, however, garner a higher interaction rate in comparison and have registered the fastest growth and have changed the ways in which consumers engage with brand content. Instagram has an interaction rate of 1.46% with an average of 130 million users monthly as opposed to Twitter which has a .03% interaction rate with an average of 210 million monthly users. Unlike traditional media that are often cost-prohibitive to many companies, a social media strategy does not require astronomical budgeting.
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Facebook pages are far more detailed than Twitter accounts. They allow a product to provide videos, photos, longer descriptions, and testimonials where followers can comment on the product pages for others to see. Facebook can link back to the product's Twitter page, as well as send out event reminders. As of May 2015, 93% of businesses marketers use Facebook to promote their brand. A study from 2011 attributed 84% of "engagement" or clicks and likes that link back to Facebook advertising. By 2014, Facebook had restricted the content published from business and brand pages. Adjustments in Facebook algorithms have reduced the audience for non-paying business pages (that have at least 500,000 "Likes") from 16% in 2012 down to 2% in February 2014. 
Social media marketing is the use of social media platforms and websites to promote a product or service. Although the terms e-marketing and digital marketing are still dominant in academia, social media marketing is becoming more popular for both practitioners and researchers. Most social media platforms have built-in data analytics tools, which enable companies to track the progress, success, and engagement of ad campaigns. Companies address a range of stakeholders through social media marketing, including current and potential customers, current and potential employees, journalists, bloggers, and the general public. On a strategic level, social media marketing includes the management of a marketing campaign, governance, setting the scope (e.g. more active or passive use) and the establishment of a firm's desired social media "culture" and "tone."