Not so - I have done two Groupons - they pay three payments. The first arrives around five days after the deal runs, the next 30, the final 60 days. If they don't do that outside of the US, well, that's odd, but here in the US, it is as I have described.
Frank Sinatra was a narcissist and ridiculous. He never took the time to understand what the songs were about. A truly great singer, like Tony Bennett or k.d. lang, for instance, is one who sings in service to the song. Sinatra sang a song in service to himself. And while the sound of his voice is lovely, his singing is wretched. I can't stand to listen to him.
The difference between chiropractic and massage therapy, though, is that massage therapy is becoming increasingly studied and found to have significant benefit for many conditions. The big associations of massage therapists want and encourage more scientific study of massage.