A friend of mine recently published a book -- "Lessons Learned the Hard Way" by John Samuels. Against my advice, he is giving away copies on Amazon on March 14 & 15th, and asked me to let people know.
The Amazon page URL is here: LESSONS LEARNED THE HARD WAY.
I've personally not had very good luck with these "free" promotions. You give away a lot of books and do very little to build an audience. But he's not listening, and his loss is your gain. Mark your calendars and get your free copy starting next Friday.