The important part from the article is : <i>"until there is a clearer understanding of how the company intends to use the personal data of WhatsApp’s 450 million users"</i><p>FB would be drooling over all the messages, pics & videos on Whatsapp. For person-to-person communication, I prefer a paid app over an ad-supported free one. If I wanted the latter, there are no shortage of options.
I wonder how Whatsapp spells out the usage of personal data in their ToS.