Very interesting; thanks for posting that.
Factoid from the article:
One of the big differences between ASL and many other sign languages is that ASL primarily uses only hand gestures, whereas most types of sign languages, such as BSL, rely heavily on facial expressions and other physical expressions outside of hand and finger gestures.
I studied ASL for 2 semesters in college, and we were constantly reminded that our facial expressions communicated as much as our signing. I observed the reality of this from deaf people while communicating with them.
In your opinion, Iamallcool, is the above quote correct about ASL?