This combined profile of Groupon and its founder, Andrew Mason, is a great fit for anyone interested in entrepreneurship, online businesses, or simply understanding the workings of a prominent company in today’s culture. Wolny emphasizes how Mason’s personality has played out in Groupon’s business culture and success, at times coming off as somewhat hagiographic. The book is more evenhanded when the focus shifts to Groupon itself, discussing the IPO, competition, acquisition of other companies, international growth and expansion, and ongoing innovations. The back matter is a bit excessive, including a 15-page bibliography and taking up nearly one-third of the book. The photos, meanwhile, feels sparse and casually paced. Still, this book in the Internet Biographies series succeeds in providing a clear, informative, and interesting look at the rise of a company that regular people love.