Imagine someone stealing your book and then publishing it as theirs! The link below contains a cautionary tale. Alarmingly, the fraudster works via eLance, a very popular outsourcing website (although that is not how he stole the book).
NOTE: it is an American story, so when it talks about copyright registration, that only happens on America and does not apply in other countries. Be alert to the dangers of book theft http://chrismarlow.com/ojuola-infotech-stole-my-book