Get on Facebook (Meaning) I would like to know the meaning of the expression "to get on Facebook." What is the meaning of the verb "get" in that expression. I wonder if the expression "to get on Facebook" means something like "to use Facebook" or "to register on Facebook." Here is the context: 1. We are trying to maintain our relationship with our people. First, we sent out postcards to everyone in the family, all of our families, saying, "we are thinking of you." Then we got on Facebook for daily advice.