I just returned from a conference where we tested several interaction
designs on 45 users (you can see a summary here along with a simple
breakdown
of what it cost us:
http://www.dexodesign.com/2007/07/usability-testing-at-conferences.html)
.
This was a very successful event for us; we came back with great
feedback
that will feed several changes in our designs.
Out of curiosity, do many others do any usability testing at conferences
in their domains (this was a networking conference - my company c