Central and Eastern Europe (CEE) and the Middle East and Africa (MEA) will experience the fastest growth in Internet ad spending during the forecast period with a CAGR of 42.1% for CEE and 29.8% for MEA. Online advertising in Asia/Pacific (excluding Japan) will also experience dramatic growth with a 2007-2011 CAGR of 25.4%. Internet advertising will make the greatest gains relative to total ad spending in Western Europe, where online ad spending will capture 18.2% of total ad spending in 2011. This compares to a 16.3% share for online ad spending in Japan and 14.6% in the United States. More than $5 bln will be spent worldwide in 2008 in each of the top four categories of online ads – adult content and gambling, information, electronics, and computing. These will continue to be the leading categories in 2011, according to IDC.