There are more than 50 crowdfunding Web sites in the United States alone and they attract a lot of money from a lot of people. But why do people give on these sites and why do they support certain projects? Elizabeth Gerber, a professor at Northwestern University, has studied crowdfunding and says there are four primary reasons why people give:
1. Because of a reward system, people want acknowledgment.
2. Because they have a connection to one of the people seeking donations.
3. Because they want to be a part of something, be part of group
4. Because they want to support efforts analogous with their beliefs.
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