The document compares projections for mobile advertising spending in 2010 to forecasts for 2011 across 210 US media markets. Total projected national and local mobile advertising spending for 2010 was $1.9 billion, projected to increase to $3.1 billion in 2011 forecasts. The top 5 markets by total projected 2010 spending were Chicago, New York, Los Angeles, Philadelphia and Dallas-Fort Worth. Mobile advertising was projected to account for 12.5% of total online advertising in 2010 and increase to 18.2% in 2011 forecasts.