Because of the softer economy, the Global Business Travel Association lowered its 2011 growth estimate for the number of U.S.-originated business trips to 2.3% from 3.4%. But because of higher travel-related costs such as airfare, spending by business travelers is still expected to grow by 6.8% to $107.2 billion. Corporate travel offices have pretty much accepted the higher costs, the report said. “Growth in total spending on business travel is expected to remain strong through 2011... driven by both strong demand and travel price increases,” said the GBTA, an Alexandria, Va., trade group for the travel industry. Get the full story at MarketWatch