Century 21 doubles down on Facebook game advertising

Previous ad campaign tripled franchisor's Facebook "likes"

After seeing success with a Facebook gaming ad campaign this fall, Century 21 Real Estate LLC has announced that it will advertise in a similar Facebook game, The Sims Social, for the holiday season.

During the campaign, which runs from Dec. 20 to Jan. 9, gamers can earn virtual currency by using Century 21-branded items, like a fireplace they can use to "warm" their virtual homes.