Word of mouth is generated by delight.
But how do you achieve delight?
Would you believe me if I were to tell you that there’s is a simple formula for how to do it?
In his remarkable book titled The Designful Company, Marty Neumeier offers this time tested formula:

   d   x   d  =  :D

Difference        Design          Delight

Case in point: LunaTik by Scott Wilson.

Delightful, isn’t it?

As Tom Peteres says, design is the principal reason for emotional attachment and NO. 1 determinant of whether an experience stands out or not.

When Scott was just starting out with his LunaTik project, he asked for $15,000 in funding through kickstarter.com. (A quick reminder: Kickstarter.com is the largest funding platform for creative projects in the world.) Guess how much he ultimately received? Almost a MILLION dollars. Why? Because Scott mastered this simple formula:  d   x   d  =  :D.

My 2¢:
Don’t to confuse simple with trivial.  Here is how most dictionaries define the word trivial:

Trivial (triv·i·al)
adj.
1. Of little significance or value.
2. Ordinary; commonplace.

Just because something is simple, that doesn’t mean it’s trivial.