5 ways bigger online sales can hurt retailers By: CNBC.com News December 15, 2014 at 15:03 PM EST Investing in online shopping is essential for retailers, but there are a number of ways it can dent their sales and profits. Read More >> Related Stocks: Best Buy Comscore Inc FedEx Corp Forrester Resrch Pitney Bowes Target Corp United Parcel Service Wal-Mart Stores, Inc. Wells Fargo