The launch, which Facebook is calling a "small alpha test," brings Facebook Exchange-targeted (FBX) ads, which are special ad units served to members based on their online browsing behavior, to the desktop version of News Feed for the first time.
"We wanted to give advertisers and agencies the opportunity to deliver highly relevant ads in News Feed, the most engaging place on the Web," the company wrote in a blog post. "We also believe that ads delivered through FBX will create more relevant ads for people."
The addition of the ad unit will not change the total number of ads people see in their News Feeds, the company said.
Previously, Facebook allowed advertisers to run FBX-delivered ads on the right-hand side on the desktop. This unit's format, called "Page post link ads" in Facebook speak, is more familiar to traditional display ad buyers than Facebook's own native ad unit, the Sponsored Story, because advertisers can tap their own user intent data for targeting purposes and direct people to outside landing pages, instead of Facebook Pages, for conversion-tracking.
The introduction of FBX-delivered ads to News Feed, albeit small to start, feels like Facebook's Plan B revenue-growth strategy. Sponsored Stories in News Feed, on both Web and mobile, sure sounded like the company's Plan A, especially the way Chief Executive Mark Zuckerberg and COO Sheryl Sandberg talked about the units, which offer Facebook Page owners increased exposure for their content, in post-earnings calls with investors and analysts.
In October, the company exclaimed that it was makingfrom the in-stream, Sponsored Story placements by the end of the third quarter 2012.
But since the social network reportedin late January, and , investors have been increasingly skeptical of the company's ability to grow revenue as it spends more. The stock has slid backward, down about $6 per share, or 20 percent, since it closed at $31.24 on Wednesday, January 30.
Investors haven't exactly rallied around today's reveal, but Facebook's shares are trading up by a few cents Tuesday. Perhaps there's something to this Plan B.