This podcast episode discusses the milestones achieved by Basecamp, 37signals, and the book REWORK. The hosts delve into the book's journey, from its inception as a collection of blog posts to its transformation into a bestseller that continues to impact readers. They highlight the importance of editing, conciseness, and challenging traditional publishing norms to create a book that stands the test of time. They also discuss the difficulties of publishing a book, the benefits of writing online, and the potential for a new book about their business practices.