Retailers are going to get very personal in 2039 By: CNBC.com News July 31, 2014 at 07:00 AM EDT From your social media posts to your locale, retailers find ways to use data to better target consumers. But at what point is it just plain creepy? Read More >> Related Stocks: Forrester Resrch Gartner Inc Google, Inc. International Business Machines Macy's Twitter, Inc. Wal-Mart Stores, Inc.