Sponsored Skydive for Cancer Care?

My friend and I are doing a sponsored skydive to raise money for Cancer care and I was wondering if anyone knew of a safe/secure way we could set up an online donation service? Because it'll be easier than chasing everyone up to pay the money and I think people would rather donate anonymously. I was thinking we could set up our own Paypal account, but then it charges us to recieve payments...Any ideas would be great (except 'jokes' like inmybackpocket.com)