SocialTimes has the scoop:

Starting today, Wired contributing editor David Wolman is conducting a 4-day “experiment in barrier smashing” to see if he can sell his new book, The End Of Money, on Twitter. To buy the book, readers hit “reply” to a specially coded Tweet with the word “buy” in the text to enter the payment system and download the eBook. Is Twitter a viable platform for selling goods? The microblogging site didn’t make a single dent in Black Friday sales, which collectively drew only 0.34 percent of referral sales and 0.84 percent of referral traffic from social media sites overall, according to a study by IBM.

New Career Opportunities Daily: The best jobs in media.