The latest report from the Interactive Advertising Bureau (IAB) and PricewaterhouseCoopers has revealed that search engine marketing saw revenue growth of 44 per cent in the US in the first half of the year.
According to the figures, search accounted for more than $5 billion (£2.9 billion) of the total $11.5 billion generated from internet advertising in general during the period.
The display ad sector also performed well, with formats such as rich media, sponsorship, video and banner ads helping the medium to see revenue growth of 33 per cent to a total of $3.8 billion.
Revenue from classifieds reached $1.6 billion, while lead generation and referrals income amounted to $806 million.
"Interactive advertising continues to demonstrate year-over-year growth as marketers and consumers increase their embrace of digital media," IAB chief executive Randall Rothenberg remarked.
In the UK, online spending in the same period reached almost £1.7 billion, according to recent figures from the British Internet Advertising Bureau.
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