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When the fund-raising period is over, the money is only transferred from contributors to entrepreneur if some specific goal is met. If the goal is not met, then contributions are refunded automatically. -Wikipedia

Sellaband.com. Pleasefund.us. Kickstarter.com. Ipledg.com. Invested.in. Fundedbyme.com. Fundageek.com. Crowdbackers.com.