Another great question I got from Seth Godin's newest book, The Icarus Deception is, "Who will your customers become after they interact with you?  If we're the center of that answer (I want them to purchase more stuff) we're going to have little or no impact.  But if they're at the center of the answer, we have the chance to create lasting impact in others by the work we do.

Great post and great challenges.  Thanks.