“FWIW” stands for “For What It’s Worth.” It is an abbreviation commonly used in casual communication, especially in virtual communication like emails, social media, etc. People prefer using this abbreviation to convey an opinion or suggestion without being too assertive or forceful. It is usually employed to show that they are providing information, whether it is useful or not, and it is up to the receiver to judge its importance. For example, a person can say, “FWIW, I think this is a better option,” in a casual conversation.