When it comes to helping your social media profiles rank well on search engines, the more relevant content you provide about your business, the better. So take advantage of the places in social media where people expect you to talk about yourself, like the "About" section and your URL. Without keyword stuffing, you should update your introduction on Google+, bio on Twitter, and the About sections on Facebook and Pinterest to accurately describe your company. Make the copy in these intros reader-friendly, while using 2-3 business keywords you think people will use when looking for your types of products or services to help it rank in organic search. In addition, provide a link back to your website, which can help create inbound links to your website and boost its SEO. For Google+, you can even link a particular keyword in your introduction back to your website.