Today was Day 16 of my 29-Day Giving Challenge. I donated money to one of my favorite charities, the USO. I believe firmly in their mission, but their low efficiency rating at Charity Navigator has always bothered me. In an effort to force them to use my donations efficiently, I donate to a specific program, like Operation Phone Home, which provides phone cards to service members. I also like Operation Care Package and have donated to that in the past as well.