Nokia today acquired a social networking site for travelers in its third complementary, boutique tech firm purchase in the past month.

The latest firm to join the Nokia (NYSE: NOK) family is Dopplr, which has a staff of seven and offices in London and Helsinki. Using the company's "social atlas," Dopplr members share travel plans, tips and advice within private social networks either on a PC or mobile phone.

"The Dopplr team brings to Nokia's Services unit unique know-how in creating Internet-based communities and showing their journeys, experiences and tastes collectively on the Web," Nokia said in a statement.

Financial terms of the deal were not disclosed.

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