It seems that the use of counting both sides (i.e. 4x5) has become more popular in the last 10-15 years. When I was a kid I remember hearing only one side counted. Now both sides is more popular.
"Once you quit hearing sir and ma'am, the rest is soon to follow." - Cormack McCarthy
"Feed me, or feed me to something. I just want to be part of the food chain." -Al Bundy