Global ad expenditure forecast to reach US1 billion this year, the same as the peak level of expenditure reached in 2008.
Expenditure predicted to grow 4.1% in 2011, essentially confirming the 4.2% growth predicted in April.
Small softening in the Americas and Europe counterbalanced by stronger spending in Asia Pacific.
Middle Eastern advertising continues to decline as political disruption spreads
2012 and 2013 forecasts marginally upgraded.
Internet the fastest-growing medium (14.2% a year) between 2010 and 2013.
Television to contribute most new ad dollars (49% of total).