What’s Social Selling Index (SSI)? SSI is the acronym of Social Selling Index. This index developed by LinkedIn measures the position that a person has as a personal brand for the rest of users. In other words, how a personal brand ranks in people’s mind. This index is very important for those who are interested in generating more business from LinkedIn. SSI is made of 4 elements that measure the efficiency of a professional brand on LinkedIn, watch this short video to know more about it www.LindaWaterhouse.com.