Along with the rest of the online ad market, the local sector has enjoyed rapid growth during the past five years. And in 2009, Borrell Associates predicts a 12% increase for local online advertising. But after this year, Borrell analysts expect the growth rate to slow significantly. The company also foresees online formats taking a larger share of local ad budgets. Marketers, currently allocating 13.8% of local ad budgets to online formats, will increase the percentage to 16% by 2013.