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New services try to make location information useful but not invasive.
A malicious site can find out what social-networking groups you belong to–and then figure out your identity.
Approach could help software learn how to identify fake accounts with less honorable intentions.
Users can share information, but the network only sees encrypted data.
Startup PatientsLikeMe is harvesting and analyzing patient information in a whole new way.
Ford and the University of Michigan are developing social networking apps.
A new app makes it possible to identify people and learn about them just by pointing your phone.
Service tracks social network chitchat about a product.
What happens when your online pals meet your TV?
FaceCloak lets users hide sensitive updates from prying eyes, including Facebook’s.