Quick and dirty testing

As the name implies, this is a way to get fast user feedback on your product without any scientific rigor whatsoever. There’s no time or thought given to recruiting the ‘right’ participants; you just show it to the first person you find and see what they think. This can give you immediate insights into quick and simple fixes, and can be done at any time, as often as you like, with anyone remotely suitable.

The argument for quick and dirty testing is that doing some usability testing is better than none. The arguments against this are that the results might be as good as doing no usability testing.