Nonprofits say Facebook's donation tools let them reach big audiences with minimal effort, but give them "virtually useless" data on actual donors (Kurt Wagner/Bloomberg)

Kurt Wagner / Bloomberg:
Nonprofits say Facebook's donation tools let them reach big audiences with minimal effort, but give them “virtually useless” data on actual donors  —  - Groups weigh donor relations versus network's broad reach  — Company's fundraising products have generated $3 billion