In Seven things to know about kickstarter it is stated pretty clearly that A. you fund creative projects, B. you are supporting someones dream and C. a project

In Seven things to know about kickstarter it is stated pretty clearly that A. you fund creative projects, B. you are supporting someones dream and C. a project might take longer than expected. That all signals 'risk!' to me. The guidelines for projects are pretty slim. Again a hint that 'anything' goes on a site like this. All very different from your regular store where the basis of your contract is, usually via terms of service, "pay X to receive good Y within period Z".