One of the things Jason and I talk about often is the difference between sites created by extremely intelligent programmers versus people who work day-to-day in philanthropy. Raising money is hard. Inspiring people is hard. Sites like Jumo are built to make activism as easy as possible whereas we want changemaking to be as meaningful and effective as possible. Easy rarely works when it comes to big problems - that's why the problems exist and persist.
What is most frustrating is how much publicity and mindshare sites like Jumo receive. I really have a hard time with a concept often repeated that I find incredibly passive and borderline bizarre - that people want to get involved but don't know how. From the Jumo "About Us" page (bold and red added by me):