In never eat alone, what is the method of contact ferrazzi describes as, "a quick casual greeting, and it can be done in any number of creative ways."

Pinging

Explanation:

Keith Ferrazzi is the author of the book never eat alone in which he provides ways to build and maintain relationships with other people. In his book, Ferrazzi has advised that "pinging" is the way by which about 80 percent of the relationships can be maintained. He has defined "pinging" as a quick, casual greeting which can done in any number of creative ways. He has given three steps by which pinging can be done to establish new relationships:

Step 1. Send email, call through phone or have face to face interaction with people you are trying to establish a new relationship with.

Step 2. Do a phone call or send an email once a month after a relationship has been nurtured.

Step 3. Having atleast two face to face meetings outside the office leads to establishment of friendship.