Hmm. I started messaging using ICQ, then probably Yahoo, then microsoft messenger, now it's Skype. The first three offered exactly the same service. The other d

Hmm. I started messaging using ICQ, then probably Yahoo, then microsoft messenger, now it's Skype. The first three offered exactly the same service. The other day I tried to convince someone to contact me on Whatsapp but he has already Viber. The network effect doesn't seem to be that strong, and sudden, catastrophic network switches happen all the time.