Some expats are invisible. They look like they are native in their adopted country. That can be positive and negative. We explore how with writer and expat Surekha A. Yadav who wrote the article "What's It Like to Be an Invisible Expat" for the Wall Street Journal's Expat Blog.    NEVER HEARD THE SHOW? Don't be afraid to start with Episode 1:OUTSET SPONSOR: Reach thousands of expats and travelers all over the world by sponsoring The Bittersweet Life. Write the at bittersweetlife@mail.com to get the conversation going. JOIN THE CONVERSATION Connect with us on Twitter, Facebook or write us @ bittersweetlife@mail.com. ©Web and show content can only be used with written permission.