What is 8 seconds?  

It can be forever to a child waiting for a treat or an eternity for a mother waiting to hear her baby’s first cry.

For a marketer, it’s a key and a blink of an eye.  

The rule is that you have 8 seconds to capture the attention of the reader and attain a positive return on investment.  After that “Poof”- there goes 50 percent of your readers according to Marketing Sherpa studies.