They don't, the campaign is Fixed Funding - once it failed to meet the target all backers got a full refund http://www.indiegogo.com/how-pricing-works-on-indieg

They don't, the campaign is Fixed Funding - once it failed to meet the target all backers got a full refund http://www.indiegogo.com/how-pricing-works-on-indiegogo http://www.indiegogo.com/how-pricing-works-on-indiegogo