Social interaction models: Facebook, twitter, turntable, EmpireAve, & Google+ as usual - a smart and interesting post by Gravity7. gravity7: Whether by design or by accident, every social tool is an instance of a generalizable social model. The model is defined by the types and modes of social interaction built into the… sarita bhattJuly 20, 2011Comment Facebook0 Twitter LinkedIn0 Reddit Tumblr Pinterest0 0 Likes