Local online ad growth slowing, says Borrell study: Borrell Associates’ outlook for 2010 is now available, and the research company is predicting local online advertising growth of 5 percent, to $14.9 billion, down from 12 percent in 2009. “The game in 2010 will center more around stealing market share than growing the market,” Borrell says, noting that “some media companies are starting to eat sand” as advertisers have more options for their local online ad dollars. “(Advertisers) will abandon programs that just do not work, and embrace those that produce measurable results,” the report says, noting that mobile and online promotions are the hottest growth categories.