kidnapping via orkut

I just got a somewhat disturbing message through a friend. Though unsubstantiated, the story is that a college student from a well-to-do family in Sao Paulo, Brazil was kidnapped and police claim that the kidnappers knew just about everything about her - her friends, her appearance, and where she was going to be - by reading her profile on orkut.

I won't repost the messages here (one in English, the other in Portuguese), as they include names and identifying details. Apparently there is an orkut account (now deleted) with a name matching the victim. I don't know if the story is true... for example, I don't know how the police would know that the kidnappers used orkut (correlated evidence perhaps), and I can't find any mention of the story or principals on the web. Still, it is certainly possible that the pseudo-public disclosure people engage in on social networking sites could come back to hurt them. I can imagine location-broadcasting services (e.g. tell me where my friends are), especially in the hands of younger children, causing even bigger problems.