Regulation is coming to the world of Internet commerce. On Friday, a judge issued an order for Apple to alter e-book contracts containing a clause that may limit price competition. The clause in question, called a "most favored nation" clause, gave Apple preferential treatment and allowed the company to control the prices offered to its competitors. Apple will now be prevented from employing such preferential treatment for the next five years. For the first two years, an outside auditor will monitor the tech giant's compliance with the order.