E-Book Universe

I came across a diagram prepared by technology news site techflash: The diagram, entitled E-Book Universe, shows the companies involved in e-book business, various readers, online libraries and various technologies. The relationships between the entities on the diagram are of type:

• Reading Device
• Wireless Provider
• Mobile App
• Content Provider
• Acquisition

I think it's great to try to capture the significant part of the booming e-book industry in one diagram.