I have found the book The Big Switch
and recommend it. A bit off-topic for this list, but Henry's recent posting re http://www.shapeways.com
relates precisely to one of the central themes of the book - that there is a growing "gift" economy (to which I personally, by the way, have been a big supplier, developing Jmol this way) - that involves a very few people making huge (and I mean HUGE) fortunes from people like us doing the labor for them. There's a real question as to what this means for the global economy, what it means for the middle class, and what it means for developing nations.
Just putting that out there.