People who are already giving the max to GiveWell-supported charities should not divert their funds to Watsi.
People who have more to give and want maximum impact should follow GiveWell's recommendations.
However, many people have not given to the max, nor do they care so much about maximum impact. For them, there is Watsi to direct their dollars to a noble cause, rather than on Minecraft-themed plush toys or something.
People who are already giving the max to GiveWell-supported charities should not divert their funds to Watsi.
People who have more to give and want maximum impact should follow GiveWell's recommendations.
However, many people have not given to the max, nor do they care so much about maximum impact. For them, there is Watsi to direct their dollars to a noble cause, rather than on Minecraft-themed plush toys or something.