+1 WhatsApp. I was in early of Facebook and used it delightedly for a few years. Then it just went spammy for me and I also didn't like that people seemed to drift towards using it to show off their lives as opposed to connecting with people. WhatsApp groups on the other hand by virtue of not being public are more personal. In some of my groups we have full on debates which I think if they were public some members of the group would be cancelled.