The Search For Seducible Moments
http://www.uie.com/articles/seducible_moments/

Spool, Jared M.
User Interface Engineering
2002

Abstract:

If you offer something that is unique to your organization, (and chances are that you do - that's why you're in business) then how do you make the users aware of these benefits? Jared Spool discusses how to identify these 'seducible moments'.