The document discusses untapped opportunities for brands to leverage social media reviews. It outlines that online reviews are the top source consumers use for research before and after purchases. Then, it describes four untapped opportunities for using reviews in social media: 1) using organic comments that consumers post, 2) curating UGC like photos and videos, 3) targeting advertisements based on review content, and 4) partnering with influencers. The presentation encourages brands to mine existing reviews and user generated content to create low-cost yet impactful social media advertisements.