Negligent misrepresentation is when a person does not lie directly (saying something knowing it to be untrue), but has made a statement about a subject with no reason to believe it to be fact. Another example is a real estate agent attempting to sell a home to a buyer who wishes to get...
A lot of advertising is negligent misrepresentation, but it usually is so close to puffery there is very little the customer can do. For example, almost every food marketed to children says it is "part of a healthy, filling breakfast", "a nutritious snack", or "part of a child's health...