Nokia (NYSE: NOK) has purchased Plum, a platform used to create private social networks. In a brief statement, the mobile giant said little about its plans for the startup, noting only that the company would “complement Nokia’s Social Location services.”

But Nokia said just last week that it was looking at buying small technology companies with talented teams that were developing services that it could later offer. Nokia also purchased social networking software company Cellity in late July—and promptly shut down that service.

In a blog post announcing the sale, Plum founder Hans Peter said he could not talk about what his company would do under Nokia but said that its service continued to “operate unchanged.”

With Plum, users create private social networks, where they can share updates, links, and photos with small groups of friends or co-workers. The company also makes its social networking platform available to third-party websites, which use it under their own brand names. Among the sites that use it: i-Concerts, travel site ViaMichelin, and travel search engine Mobissimo.

Financial terms were not released. Plum is backed by Vulcan Capital and Levensohn Venture Partners. Release.

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