How do I measure the internet audience?
Andrew GreenZenithOptimedia
BACKGROUND
There were 1.1 billion internet users in January 2007 – about 17% of the world's population.1 Of these, the majority access the net via high-speed broadband connections. The medium will account for 7% of global advertising expenditure in 2007.2
On-line media have grown from a relatively simple world of banners and buttons to one providing a broad array of interactive products and services. As a result, advertisers can harness the power of this medium in a host of ways.
They do this through banner ads, key...