Slight correction here. No one at Effective fundraising has large amounts of fundraising experience. I have fundraised for other charities but not effective ones before. We do not expect the full average ROI in the first year (as you can see from our cost estimates). We are also consulting with several very experienced grant writers that will help speed up our learning process.
Disclaimer: I am the Co-ED of Effective Fundraising.
Many people know about GiveWell and their top-ranked charities. But how easy would it be to make a better one? In "Why It Should Be Easy to Dominate GiveWell's Recommendations", Rob Wiblin notes the simple solution -- fundraise for whatever organizations GiveWell recommends, and raise more than a dollar with each dollar you receive.
Edited on 22 July 2013 to correct a mistaken citation.