Now is the time for another great dose of the newest additions to a variety of social media networks. This week, it’s truly promising. Take a look at your social media summary, week ending October 4th. First on the list is Sarah Michelle Gellar joining Twitter, who is currently promoting her new show, The Crazy Ones. Next up is Robert Sacre joins Twitter as well, who joined early this week, a 7-footer playing for the Los Angeles Lakers. Following him is Nandan Nilekani, tagged as the Bill Gates of India also joined Twitter. He is one on India’s main players in the technology industry.