Not every message or involvement needs a specific platform. There's a target audience for people who use Linkedin, Facebook, Twitter, and other platforms. Find out what YOUR customers/clients/potential associates or business partners use (the most) and target your social media marketing via those channels. To attract to your page - do not spam - but have a mailing list, psot relevant content, inform and educate yoiur taget audience. Never try to sell, but do raise awareness of what you do and why you or your product is premier! -- and the customer will come to you.