WSJ.com - Google Puts Marketers on Map In a Reach for Local Ad Dollars

"Google began letting advertisers buy ads displayed on specific geographic locations on its popular online mapping and local search service. The move further extends the reach of its ad network and potentially lets Google tap into local marketing dollars that traditionally go to phone directories and other media.
The Mountain View, Calif., Internet company has been testing such ads on a limited basis since December with companies such as Barnes & Noble Inc. and late yesterday opened them to all advertisers. The move follows other efforts by Google to strengthen its so-called local search services, which help users find businesses located in specific locations and usually include maps.
Search companies believe local search will become more important as more consumers access the Web from cellphones to find directions and businesses on the go. They also see a potentially rich ad market. Advertising linked to Internet Yellow pages, local search and local search on mobile devices will total $1.6 billion this year and more than $6 billion in 2010, according to estimates from Kelsey Group, a Princeton, N.J., research and consulting firm."