You must make use of AFAIK when you wish to give information and explain that it may not be fully true. It comes in a conversation that contains facts, plans, updates or assumptions in which you are not 100 percent sure. The way AFAIK allows demonstrating humility and openness, asking others to provide additional information (that is correct) in case they possess it. It is particularly common in the workplace conversations, group discussions and fan forums, and informal texting.