One of the folks I have been following for some time online is Ben Young from New Zealand. His new book, The Best Ideas Are Free, will be coming out this Summer.
While I haven't technically read this book yet, I have been reading his blog for the past year. I can say with absolutely no qualms or concerns that this is a book worth buying, reading and re-reading. I highly recommend you buy the book and subscribe to his blog.
Ben's insights are incredible. He has helped me to understand the implications of many of the newest tech tools on the market today. As a technology coach, I can usually understand the functionality of business tools very quickly. However, the larger societal implications can sometimes be tougher to divine. Ben does all that and more every day on his blog.
Check it out. http://www.bwagy.com/ You'll be glad you did.