Re: "Spammers are abusing the preferential treatment Google affords its own apps"
As I read it, these messages are coming from Google. The spammer sets up a Google Calendar account in the name of V.I.Agra and then sends meeting invitations to 1 millfon of V.I.Agra's friends.
I would feel sorry for a user whose name actually is V.I.Agra. Even without this.