Bing's Facebook Page Gets 400,000 New Fans in a Day Through Ad Offer in Farmville

In the latest example of brand advertising integrated into social games, Microsoft ran an advertising offer for Bing within Zynga’s hit game FarmVille on Tuesday. If users became a fan of Bing’s Facebook Page by clicking on a sponsored ad on the bottom right of the FarmVille main page, they’d receive 3 Farm Cash (FarmVille’s virtual currency). The effort was apparently successful, as Bing’s page went from slightly more than 100,000 fans on Monday to more than 500,000 as of earlier today.