A Word From the Wise: 20 Million units sold has been the minimum US audience for a meaningful game device.

According to Bing Gordon, former Chief Creative Officer of EA, 20 million units sold in the US is the necessary threshold for a successful gaming platform. And he's would know.

Here's how the emerging platforms stack up:

Currently, iPhone is around 9 million worldwide.
Facebook has 100 million users worldwide.
Myspace has 60-80 millions users somewhere.

Can you tell I'm writing this at 3AM on a Friday night?