This is a guest post from communications professional Arik Hanson. I’ve come to respect and know Arik pretty well over the last couple of months and I was curious how his work in the health-care sector could benefit from social media. Here Arik kindly obliges with his views. When you work in PR in most industries, you go home at the end of the day and wonder, “How did I make a difference today?” The answer, unfortunately, most often is…