Want Free Beer?
http://www.gotomedia.com/gotoreport/june2004/news_0607_wantfreebeer.html

Burns, Erik
GotoMedia
2004

Abstract:

Whether you are testing the User Interface for a new technology or just re-branding your service, chances are that you could benefit from some sound market feedback. The good news is that you don't have to spend weeks on research or thousands of dollars to get it. Café testing - quick, low-cost, informal market testing at a café - can help you get the feedback you need fast. This article tells you everything you need to know to get started.