Will introduced me to GiveWell.org, a site that conducts in-depth research to determine how much nonprofits and foundations actually accomplish (in terms of lives saved, lives improved, etc.) per dollar spent. This avoids the problem of most other charity “rankers,” which look at low admin and overhead costs as a flawed proxy for “efficient.” Of course, if a charity is doing the wrong things, being financially lean means nothing, hence Will’s quote. It’s all about real-world results.