State of the Computer Book Market 2008

State of the Computer Book Market 2008, part 4 -- The Languages - O'Reilly Radar: "Overall the market for programming languages was down 5.9% in 2008 when compared with 2007. There were 1,849,974 units sold in 2007 versus 1,740,808 units sold in 2008, which is a decrease of 109,166 units. So the unhealthy 8% loss in the Overall Computer Book Market was not completely fueled by programming-oriented books."