Lean startup guru Eric Ries recommends that start-ups refine their business models through small tweaks—or pivots.
These days, Chegg, a Santa Clara, California, company, bears little resemblance to its original form. In 2003, its site—then Cheggpost.com—offered free classified listings for college students.
In 2006, Aayush Phumbhra, one of Chegg's co-founders, began rethinking the company's business model. He noticed that the site's traffic was heavy only at the beginning of each semester and that many visitors were buying and selling mostly textbooks.
