Kickstarter helps projects find funding through an open network of people who are willing to contribute. It makes funding the first project easier.
Kickstarter is one of several companies that allow for groups and individuals to post their project for crowdsource funding. It let's you pitch to an open public who decides whether they want to fund heavily, fund just a small amount or not at all. The funders get tokens of appreciation from the project starters as a thank you in the end.
Some really great projects which eventually turned into start up companies started this way. It's a good test to see if your idea or project will work out before you start. People can comment on it so you get feedback also.