The experiment is another sign of how the search giant plans to court locally focused advertisers.
Google is experimenting with plotting local advertisers' locations on its Maps product, giving marketers a visual and spatial accompaniment to their locally targeted ads.
A search on "hotels" in New York City returns an organic list of local hotels, plotted on the map with red markers and bracketed by sponsored hotel listings, plotted on the map with blue markers. The same search in other locations, such as San Francisco, doesn't yet return the paid listings.
So far, InterContinental Hotels and Starwood brands appear to be participating in the test.
Clicking on a blue marker brings up a balloon with more information about the hotel advertiser, such as address and phone number. It also includes a logo for the hotel brand. Logos haven't previously been part of Google paid listings, but in talks of its recent deal with AOL, the company said it would likely begin offering logos in the future.
The new ad format was first spotted by blogger and Moreover founder David Galbraith, who mentioned it on his blog.
Google spokespeople didn't respond to inquiries about the Maps ad plotting, but the company typically tests new formats and initiatives with small groups of advertisers or agencies.
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Pamela Parker is a former managing editor of ClickZ News, Features, and Experts. She's been covering interactive advertising and marketing since the boom days of 1999, chronicling the dot-com crash and the subsequent rise of the medium. Before working at ClickZ, Parker was associate editor at @NY, a pioneering Web site and e-mail newsletter covering New York new media start-ups. Parker received a master's degree in journalism, with a concentration in new media, from Columbia University's Graduate School of Journalism.
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