Greg Sterling, principal analyst at Sterling Market Intelligence and a blogger on , suggested that the ads would likely look much like the consumer-facing social ads on Facebook. For example, they might highlight brands that have a certain number of followers, he said. But they would target users who make business purchasing decisions.

It remains unclear whether the social advertising would be served exclusively to users on the Google+ platform or whether users might see them on other Google properties or even across the Web. Google describes its social network as a "social spine" for all of its products, rather than a destination website like competitor Facebook.

Last month, changes to Facebook's data use policy that the company will begin delivering targeted social ads beyond the limits of its own platform.

The IDG News Service