Less and Fewer

It was fun to see this little grammar faux pas addressed in the Tribune comics this morning.  I realize this could be another way our language is changing, but I tend to think it's more a lack of understanding of the difference between less and fewer.

Its most common misuse in at grocery store check out stands:  10 items or less.

Actually, it should be fewer.  You can count the items.

Less is for things that are not counted like less food, less laughter, less danger.

One can have fewer dollars, therefore less money; fewer hours, so less time;  fewer french fries, and less fat.  It's not all that confusing once you know the difference.