Testing Usability with Multiple Users

Sometimes companies need usability tests with multiple users and need them FAST. This article has some strategies for handling such situations.

Multiple-User Simultaneous Testing: MUST
Usability testing with large numbers of users ..."Testing 5-10 users at once lets you conduct large-scale usability testing and still meet your deadlines. Sometimes you need to test a large number of users. One option, of course, is to apply the standard user-testing methodology, and just do more of it. Keep testing until you're blue in the face. Unfortunately, this often gets you into serious trouble with project deadlines.>>>More... http://www.usernomics.com/news/2007/10/multiple-user-simultaneous-testing-must.html