Social media is used by more people than any other destination on the Internet and can part of your marketing strategy. Social media is important in back linking to your website but it must have proper postings on your business page(s) for it to be beneficial. Although there are virtually hundreds of social media portals, focusing on the top ones should suffice.
In order for it to be successful, Social Media does require weekly, if not daily upkeep. You should post articles to your portals as often as you can and you should build your audience as large as you can. Social Media is a great way to very quickly announce just about anything you want to your friends (likes), customers and business associates.
Most Social Media portals require you to setup a personal account first in order to create a business page(s). For instance, in LinkedIn you first create a personal profile and then you can build a master (parent) business page.