Guerrilla testing

Guerrilla testing is a way to gather cheap and fast feedback from the average person, by going out and asking people what they think of your idea or getting them to use your wireframes.

A popular way of carrying out guerrilla testing is by setting yourself up in a coffee shop (or another public place where your potential audience might hang out) with your website or other digital product open on a laptop, then ask people to test in exchange for a coffee and a muffin.