A quick heads up – Neilsen just released a report to help advertisers better understand the value of social media impressions. In order to come to their enlightening conclusion, they analyzed over six months of responses from 800,000 users to more than 125 Facebook ad campaigns by 70 different brands. It comes down to Paid Media vs. Earned Media, and the short answer is: both. We’ll let Mashable break it down for you. Be sure to grab the full report. Print it. Live it!