> Comments that do nothing more than @mention people publicly. It just seems weird to do that. It's grown to be a more common way to share something with a fri

> Comments that do nothing more than @mention people publicly. It just seems weird to do that. It's grown to be a more common way to share something with a friend. Less clicks than sharing in private messages, and also more inviting to conversation — which would be shared not only between you two, but also open to other friends like yours. Mostly those @mentions and conversations are very casual, like "me: @friendName -- @friendName: OMG this is so @frank -- frank: I'm in this picture and I don't like it". All of which makes perfect sense for mindless positive chit-chat.