Hi there,
I found this guy that says:
NOTE: YOU'LL CONNECT AND AUTOMATICALLY FOLLOW
@DAWESTHEBAND ON SPOTIFY WHEN YOU ADD A BAND!
https://www.tweematic.com/favoritebands/
So I assume that it is OK to make an app for automatically following somebody when clicking - provided you say what is going to happen. Right? It sounds strange to my ears... but seems to be true.