Sanjana Hattotuwa discusses social media and new media. He defines social media as using internet technologies to transform broadcast media into social media dialogues where people can be content producers. New media encompasses digital technologies for information and communication. While traditional media leverages new technologies like the web and mobile, citizens can now also generate and disseminate news and information through blogs, social networks, maps, and mobile devices. Key aspects of new media include two-way communication, addressing diverse audiences, and citizens producing content that gets broadcast on high-definition media.