Apple CEO Tim Cook has apparently joined Twitter with the username @tim_cook, with fellow Apple executive Phil Schiller retweeting him as a means of verification. The account was first created back in July, but today saw Cook's first tweet. Cook's bio on the site reads "CEO Apple, Fan of Auburn football and Duke basketball". Cook is an alumnus of both Auburn and Duke. His first tweet reads, "Visited Retail Stores in Palo Alto today. Seeing so many happy customers reminds us of why we do what we do." Earlier today, Cook visited the downtown Palo Alto Apple store a
