I really appreciate the offer, but just to be clear, I didn't fund the whole treatment! (I'm a beer drinker, but I live near Toronto and won't be near San Francisco any time soon - but if plans change, will do.)
I know you've had a ton of ideas thrown at you in this thread, but I've been thinking about your site since donating and I think what would be really amazing, if you can accomplish it somehow, is a way to encourage people to donate regularly.
There are probably many ways you could do this, but here's one: allow people to donate a sum of money, up front, that is not assigned to a particular person who needs treatment. Periodically prompt this person to fund treatments using some portion of this sum. Alternatively, support subscription billing where each time the money is withdrawn, the person is notified and asked to assign the money that was withdrawn to a particular person who needs it.
I really feel that a recurring process of some kind could both vastly increase the amount of money you raise, and also benefit donors by giving them a periodic uplift in their mood and level of happiness. It could become, if this word is not too misplaced, addictive.
Those are awesome ideas! We had never thought of loading up on Watsi Credit (with a large, one-time donation) and I think that's a super cool option to offer donors. No doubt we are going to see a major decrease in traffic after this HN post, and working on ways to retain donors is going to be our next big challenge. Thanks again for the feedback and support, we all really appreciate it! (And if you do come to SF, the beer offer still stands :)