Map of the Digital Seas

...Not sure I agree whole heartedly with this, however it presents it in a much nicer cartographic way than the ugly venn diagrams that I see planners so often presenting in long-winded presentations which try to unpick the complicated relationships which keep the digital market tied together.

I'm not sure where it's from as it was sent to me in an email from my girlfriend; send me a link and I'll post the Via.