NEW YORK: US online advertising revenue climbed 34% to $16.8 billion (€12.77bn; £8.68bn) during 2006, setting a record for the third consecutive year, estimates the Interactive Advertising Bureau.

Online adspend reached nearly $4.8bn during the fourth quarter - the highest recorded level for any three-month period during the 10 years the IAB has tracked the medium - a 32% increase on the same period last year.

Comments David Silverman from accountancy firm PricewaterhouseCoopers, which helped compile the 2006 data: "All signs point to a steady increase in the level of spend by traditional advertisers that are using online advertising as an important part of their media mix."

The numbers may be revised next month when the IAB plans to release a more detailed report.

Data sourced from Wall Street Journal Online; additional content by WARC staff