It's a slow week here at the E-mail Insider Chateaux. It is the dog days of summer and everyone's out of town. We are all gearing up for September, so this week it is hard to get motivated. That means that I'm going to take advantage of the fact that most of you are away from work to discuss something that is more speculation than fact, more notion than theory. It is what I'm coining as the Invisible Channel.