Who Uses Social Media? - study compares Facebook and Twitter users/types

In the Wall Steet Journal (weekend edition) p. C4, Feb. 11-12, 2012
a brief, but fascinating, summary was provided of the personality
characteristics and traits for Facebook (vs.) Twitter.

The differences were measures for socialibility, need for cognition,
age group, conscientiousness, and neuroticism.

The summary is based on an article to be published in Computers
in Human Behavior (March) by Huges, Rowe, Batey & Lee.

Questions for discussion: What about multi-users? or with Google +?
Texting -SMS ? What are the predictors of social media usage?

see story at:  http://goo.gl/HifL1

thanks, Scott