New York—ZenithOptimedia lowered its global ad spending forecast to 3.8% growth this year, down from a June forecast of 4.3% growth, citing uncertainty in the eurozone.
Next year, global ad spending will grow by 4.6%, according to the report. In North America, ad spending will be up 3.6% next year, ZenithOptimedia projected.
The fastest-growing ad category globally next year will be Internet advertising, which is expected to increase 15.1% over this year and make up about 20% of total ad spending, according to ZenithOptimedia.
In a separate report, Nielsen said global ad spending reached $139.0 billion in the second quarter, up 2.4% over the same period last year.
The highest growth came from emerging markets, including the Middle East and Africa (up 19.6%) and Latin America (up 4.9%).
In North America, ad spending was up 2.4% in the second quarter, according to Nielsen.