Disgust, Happiness, Sadness, Fear, Anger, and Surprise

Disgust, happiness, sadness, fear, anger, and surprise are six emotions considered universal across cultures. All other emotions can be classified as products of combinations of these six.
I've researched Paul Ekman's tests for studying emotions in terms of facial expressions, and our general association of a smiling person as a happy person, a frowning person as an angry person, etc.

Using muscles in brows and mouths, we are able to express an atlas of emotions.
Right now I'm interested in the loss of facial expressions in communication online and through cellphones. (with the exception of emojis indicative of those muscles used).