Global ad spending grew by 4.3% year-over-year in Q3 2012, picking up steam after a 2.7% gain in the first half of the year, according to the latest figures from Nielsen. For the year-to-date (Q1-Q3), ad spend was up by 3.3%, with solid growth seen in the Middle East and Africa (18.9%), Latin America (5%), and North America (5%). While the Asia-Pacific region also saw ad spending growth, of 3.5% in Q3 and 2.7% for the year-to-date through September, Western Europe continued to see cuts. Expenditures in the region fell by 4.8% in Q3, bringing the year-to-date decline to 3.4%. Read the rest at MarketingCharts.