Due to a reporting error, the story "Google+ looks poised to roll out social ads," posted Wednesday, misstated Daina Middleton's title. It is global CEO.

Paragraph four has been corrected on the wire and now reads as follows:

Daina Middleton, global CEO of the digital marketing firm Performics, said that even B2B businesses are struggling with their conventional sales models and are increasingly turning to "social tools."