In a further effort to streamline its advertising offerings, Facebook is planning to phase out Sponsored Results — the ads it had served up for searches.

The company plans to stop offering the unit to advertisers in July. Later that month, users will stop seeing them. Facebook offered the following statement on the matter: "We've seen that most marketers were buying Sponsored Results to advertise their apps and games and we already offer mobile app install ads and Page post link ads on desktop to achieve these same goals."

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Introduced last August, Sponsored Results let marketers buy "type-ahead" units that popped up when users began typing a query. For instance, here's a Sponsored Result for a company called Porch Potty.

The ads didn't let businesses send users off of Facebook, one reason why app and game developers appear to have been the biggest consumers of Sponsored Results.

Though initially seen as a potential competitor to Google's search ads, the Sponsored Results is facing an early demise as Facebook continues to work out the kinks for Graph Search, the ambitious search tool it introduced in January. As Graph Search improves, expect another type of search advertising unit to take its place. Facebook still offers other search ads including right-hand column ads on results pages and Bing's search ads.

Sponsored Results isn't the only Facebook ad unit to get the axe lately. Last week, the company announced it was jettisoning about half of its current 27 ad units, including Sponsored Stories, although the social functionality of that unit will be retained in other ads.

Mashable composite, image via iStockphoto, Ceneri