Many businesses still do not use social media to marketing their company and they may be missing a rather large trick. Social media has grown vastly in population over the last ten years and initially was only used by individuals.
Some marketing agencies and businesses quickly picked up on potential that social media could have in terms of marketing their company, products or services. In my opinion all companies should have some sort of social media presence and with many social media sites not charging for the use of their site, it makes sense to use this as part of your marketing strategy.
If you are not sure of how to go about it, then you could speak to a marketing agency or specialist social media marketing person who will either offer you support and advice on how best to set up and manage your accounts or who will actually manage it for you .