From my own experience, this rings pretty true. Read the rest here.
"music is the primary topic of conversation when strangers get acquainted. Researchers concluded that discussion of music is so prevalent because people can form quick and accurate impressions about another’s personality from a brief discussion of music. They also noted that music preferences revealed different information than is obtained from other brief encounters by strangers."
So what does you iPod say about you? I would like to ask the person who stole my iPod 2 weeks ago. And then punch them.