On a recent road trip I came across a crystal clear real-life example of the importance of having traffic coming to your online properties.
The story of two garages, directly opposite each other, while driving through Buhladelah.
Moral of the story? No matter how pretty or flash your online space is, if no-one gets to see it, it may as well not be there!
http://www.youtube.com/watch?feature=player_embedded&v=h2D7QSPdS2w