Awwwww, USMCPOP. I have sent out socks in the past in packages to Soldiers and Marines hoping that would help. Your post makes me realize they probably did. Thanks for that.
One of my favorite dudes that I mailed to ended up buying a washer and dryer for their unit in Iraq to help with the problems they had with laundry.
I sent him several pairs of really good Thorlo socks, and about 20 pairs of black wallymart socks. When I got them all back in his effects, I sent a giant box of socks back to the dam. Socks and Skittles and Starbursts and Gummi Bears seemed to be the hot items at the time :)