I've argued in the past that Facebook would be compelled to monetize mobile once it went public. I envisioned that monetization taking the form of more-or-less straight ahead display ads that were targeted in some way. I also recently performed a very loose calculation of what Facebook's global mobile ad inventory might be worth (at a $2.50 CPM) and determined it could be up to $2.5 billion.
What Bloomberg reported yesterday, however, was that Facebook was considering launching mobile ads that were more integrated into the Facebook feed:
Facebook Inc. plans its first push into mobile advertising by the end of March, giving the company a fresh source of revenue ahead of a possible initial public offering . . . An idea being considered is putting Facebook’s Sponsored Stories ads, which feature friends’ interactions with brands, within the mobile News Feed, said the people, who declined to be identified because the plans aren’t public.
Sponsored Stories in the mobile news feed would be like "promoted Tweets" on Twitter in some respects. Sponsored stories allow advertisers to show Likes from people in your network (brands, products, stores) in the ad copy. They reportedly dramatically improve CTRs. Below is an example from Facebook online:
Earlier this week Nielsen reported that Facebook has the greatest "active reach" of any app across the Android OS (after the Android market). Facebook's most recent official mobile-user number is 350 million globally, out of more than 800 million total users.
My guess is that Facebook will be experimenting with various mobile advertising units/types before it launches anything officially. It already has a quasi-advertising vehicle in mobile "check-in offers." However Facebook itself currently doesn't make any money off these deals. Eventually that will probably change.