WaterForward was a fun project we did pro-bono at the Inferno this year.
The challenge was simple - can you make a charitable site grow virally? But the solution of course proved to be a tough s.o.b.
We ended up reaching about 5M people (explosive viral growth in India randomly) and raised ~$850k, with all proceeds going to charity:water.
I did a writeup of the lessons learned along the way over the holiday break. It's definitely a rough/long read, but I wanted to go under the hood for those who geek out on the details ;)
AMA!
Terrible horrible no good very bad ideas