I'm currently a Universal Fund member on Watsi and I've found it to be a very positive experience. Instead of feeling like I'm making a hard decision between treatments for many sick people I just give a set monthly amount and then each month I receive an upbeat email letting me know which patient received my funding.
I also like that my Watsi profile page shows me how many different countries my donations have reached.
What do you see as the biggest challenges Watsi faces?
So far, we've asked two of our funders to sit on our board (alongside Premal Shah of Kiva): Paul Graham, and Christy Chin of Draper Richards Kaplan Foundation.
If you're interested in the growth side of Watsi, we opened up a bunch of our data to Segment earlier this year, and they put out this post about the growth learnings they gathered: https://segment.com/blog/what-we-learned-from-watsis-data/
We also talked with First Round a few months ago about how we use email marketing to grow donations: http://firstround.com/review/what-startups-can-learn-from-wa...
Hopefully we'll be able to share more learnings in the next couple of months!