Crowdfunding Website launches Nationwide Campaign, Offers Prizes & Mentorship Opportunities to Young Leaders SAN FRANCISCO, November 4, 2013 – Piggybackr (www.piggybackr.com), a crowdfunding website for teams, announces its inaugural “Piggybackr One Million Leaders Challenge,” a campaign to mobilize the next generation of leaders, entrepreneurs, and philanthropists to raise money for their projects, ideas, and communities this holiday giving season.