The S&I 100 is the first-ever broad index of US nonprofits with proof of social impact on education, poverty, youth, and health! Get nominated to become one of 100 high-impact solutions to America’s most pressing problems and nearly 16,000 local affiliates implementing them.

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Causes
Online social networking and campaigning platform to discover, support and organize campaigns, fundraisers, and petitions around social, political, and cultural