Facebook unveiled an opt-in location-based mobile feature to let...

Facebook unveiled an opt-in location-based mobile feature to let users see which connections are geographically nearby, the company said in a blog post (http://bit.ly/Rstas3). “If you turn on Nearby Friends, you'll occasionally be notified when friends are nearby, so you can get in touch with them and meet up,” said Product Manager Andrea Vaccari in the Thursday post. Users also may set a specific location for a distinct period of time, she said. Vaccari said the feature will be available on Android and iPhone in the U.S. “over the coming weeks."