Infographic: Finance, retail and travel industries spent the most of Google ads last year

WordStream has created an infographic showing where Google made their $37.9 billion in 2011 advertising revenues.

The sector which spent the most on advertising was finance and insurance, which spent $4.0 billion, with example keywords including “self employed health insurance”, “cheap car insurance”, “credit cards for bad credit”, followed by the retail and general merchandise sector, with travel and tourism coming third.