BBB Warning on the Way

The Better Business Bureau is planning to release its formal warning next week, Preszler says.

Representatives from Google, meanwhile, say they use a combination of automated systems and user-submitted complaints to find and remove any potentially problematic ads. Preszler also says that Facebook recently removed similar ads because of numerous user complaints.

"Ever since the stimulus package started getting bounced around, these Web sites have started trying to take advantage," Preszler says.

Senior Editor Yardena Arar contributed to this story.