Is there anyone who has managed to create an integration between WhatsApp and Facebook? Last I remember was that there was an API for WhatsApp, WhatsAPI that was stored on github, but this was said to be illegal and was going to be shut down by WhatsApp.
Has anyone "legally" managed to integrate their app with WhatsApp?
I am envisioning someone being able to send a message from their Facebook (or Twitter, WeChat, in fact any IM app) to WhatsApp and vise visa. Is this facility available? How can I do it, free of charge hopefully?