Group 3 includes Kim Sung-bae, Ro Tae-hyung, Lee Young-chan, and Lee Jeong-eun. The document discusses social networking sites (SNS), classifying them as open, closed, or micro blogs. It notes strengths like easy networking, fast information sharing, and effective marketing. Problems mentioned are leaking private information, spreading false information, and addictiveness. The future of SNS in business is described as having negligible costs, better outreach to millions of users, improved search rankings with strategy, lead generation and improved sales, and enabling discussion and issue tracking.