TechCrunch reports: “Gen Z isn’t satisfied with the social media they grew up with, so they’re building the apps that they want to use. A “social branding” app for creative teens and twenty-somethings, Tagg is announcing a $2 million seed round today from Twitter co-founder Biz Stone, Facebook’s former VP of International Growth Ed Baker, TripAdvisor founder Stephen Kaufer, Pillar VC and more.”