Friendship rating guidelines

In preparing to revise my famous Friendship Application, I was explaining to Bengi, my DJ partner, best man in my wedding, and friend of more than twenty years, that one of the ways that I evaluate a person's importance as a friend is by the number of Gmail groups to which the person belongs.

Bengi, for example, belongs to two groups: Poker and Readers. This means that he receives emails related to my upcoming poker games and he is also reading my latest manuscript.  

Two groups is good...