It's a piece of shit and they know they can get away with it. Omg why are there no open protocols on Instant messengIng like email. Europe should enforce it.
I mean I know that I can google it up but I'm looking for a working example. I found some code in github that is obsolete. Also whatsapp requires phone code and qr scan so looks like it's designed to prevent a server-only bridge.
WhatsApp does work, I use it on a daily basis. The bot/bridge makes it easy to log in with the QR code. You need to keep the phone app as you need to open it at least once a month or so.
I started with server-side php scripts (SimplePie, IIRC) and got banned so I moved to client-side. I don't believe that it is in our best, long-term interest as users to make publishers aware of the possibility of aggressive filtering and page modification.
But let me donate some (US centric) general news negative keywords and phrases for you to try;
I was fed up with rss readers and other althernatives, I wanted something to browse my silly pics in style where i could define which things to aggregate. It turned out quite cool - give it a try. Oh and you dont have to have FB or Twitter etc. to use it.