I'd like to hold an online fundraiser in which I provide gift incentives of no cash value (virtual goods, extra features, etc) on my site in exchange for a user's donation to a non-profit organization.<p>I initially planned to just accept payments/subscriptions directly on my site through my existing PayPal infrastructure, and donate all of it to the organization at the end of the fundraising period.  But I learned that attempting to do so would immediately cause PayPal to freeze the account and demand paperwork that we are authorized to accept payments on behalf of a 501C (which we aren't).<p>Instead, I'm thinking that it would be nice if there were certain non-profit organizations (or an authorized third-party site that collects money on their behalf) in which I redirect a user to the donation URL, and the site sends me a notification when the user has successfully donated (via a POST to a URL of my choice), allowing me to confirm and process the reward.  (Similar to how PayPal works, but with the non-profit directly handling the processing).<p>So my question is:  Does anything like this exist?  If not, any ideas for getting something like this started?
Ask HN: How to hold an online fundraiser?