Can I recommend you read…
Simon @ February 26, 2008 # No Comment Yet
Avenue A/ Razorfish’s 2008 Digital Outlook Report, one of the better works I’ve read from an agency on the digital landscape. [The intro to Group M's All change: marketing in addressable media is up there as well, btw].
Guy Kawasaki does a good summary of some of the main points but this bit about digital advertising [...]