Almost exactly a year ago, Facebook announced that it too was killing off its Groups app so that it could integrate the feature closer with the core app experience. In both the case of LinkedIn and Facebook, the idea is somewhat the same: while we have our wider networks of friends and Pages that we follow on both platforms, sometimes there is value in communities that are focused around more specific interests, and ultimately, that might turn out to be the lever that brings more people in and out of using the main service.