Pros

1. Eradicates the need to use of "smileys" or emoticons.

2. Shows friends and people you are interacting with how you are really feeling

3. Seemlessly detects over 36 facial expressions

Cons

1. Although it can be good in some situations for friends to see what your true facial expression is, it could also work the opposite

2. Could have compatibility issues with some PC's

3. Does take some getting used to unlike normal controls