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Maybe that person looked you up on LinkedIn.

• brudgers 9y ago
  The key is that the other person's behavior is viral in terms of forming connections between the social graphs. It is why Facebook and Linkedin and Google all want my contacts...and locations. Match.com has a commercial where they show a feature which displays romantic candidates based on how many times two unacquainted people were nearby.
• s3nnyy 9y ago
  She does not have a Linkedin