What is the meaning of Synonym in this context?
Nowadays modern mobile users are very exigent – they want great, unique Material design, in-app maps, fast and precise geolocation, social (let’s use synonym – Facebook 🙂 ) sign-in and so on…
I didn't look up a dictionary because I already know what "synonym" means, but I can't fit that meaning to this context. I was expecting "let’s use app– Facebook".
Why does the author use the word "synonym"? What do they want to imply?