Potter's fund is a GoFundMe fund, started and managed by his son. I agree that GoFundMe is a poor fund base because they take so much right off the top. If I had set that one up, I would have used YouCaring.
The fund that I created for Anegada Relief is a YouCaring fund. YouCaring keeps nothing unless you add a "tip" with the donation. The only charge is the standard 0.30 + 2.9% credit card fee, which is unavoidable. To date, contributions to this fund total $76,435, and the total fees to credit card processing are $2,303.18, which is 3.1%.