… even though it can lead to additional sales, writes Investopedia.

Of the top 100 internet retailers of 2009, only 44 of them had a blog and just 36 posted on a frequent basis, it said. “Investors rightly should expect retailers to do everything in their power to drive traffic to their online stores including the use of blogging. It’s a critical piece of the e-commerce puzzle and many companies still are dropping the ball.”

Amazon, for example, writes 13 blogs include Zappos, it said. “If Jeff Bezos and company see the benefits, everyone should. Ignoring his lead is like a musician not listening to the musical advice of Sir Paul McCartney. It’s just plain dumb.”