I have supported a friends art project and paid with my credit card. Instead of securing the amount, they withdrew $1 from my account and saved all my credit card information. While I was on vacation, they tried to charge my card, when it didn't go through they informed my friend that I withdrew my support from her project. Now she's pissed at me and won't accept the support. Kickstarter doesn't care about the problem and I'm not sure if they still keep my credit card details and if they will attempt to withdraw from my account in the future.