Posted awhile back; still valid. As far as why people use it; people need to communicate and sometimes they are close or far away. Hipchat, Slack ... there's

Posted awhile back; still valid. As far as why people use it; people need to communicate and sometimes they are close or far away. Hipchat, Slack ... there's other competition and they want your conversation because they likely re-sell the big data off your conversation.