The vast majority of Facebook users say they ignore ads on the social network, according to a survey whose findings are expected to add to questions about the company's revenue prospects.
Four out of five Facebook users said neither advertisements nor comments on the social network have ever led them to buy a product or service, according to the poll by Reuters/Ipsos.
The poll comes as Facebook Inc. faces increasing investor scrutiny over its main revenue source —advertising — and whether it can wring more ad revenue from its more than 900 million users.
Before its initial public offering last month, the Menlo Park, Calif., company announced that it has yet to figure out effective ways to generate revenue from a growing trend in which users access the social network from their mobile devices. That disclosure, which was revealed in documents filed with the Securities and Exchange Commission, set off red flags for would-be investors and may have led to the stock's lackluster debut.