[tothetop]

This seems the way my brain wants to donate. I want to pick and choose instead of giving $1 every day to a random charity I have no idea how I feel about.

[briandear]

Exactly, not every charity is worthy. Some charity wasting my money on CO2 mitigation has a different value to me than a charity helping battered women escape abuse. ..as an example.

[TeMPOraL]

Now think for a minute which one of these actually matters more for continous well-being of mankind, and you'll see why effective charity is a hard problem.