Everyone does this sort of thing! The first time I saw it named (as "One Free Interaction") was this blog post: http://www.cooper.com/journal/2009/01/one_free_

Everyone does this sort of thing! The first time I saw it named (as "One Free Interaction") was this blog post: http://www.cooper.com/journal/2009/01/one_free_interaction.html http://www.cooper.com/journal/2009/01/one_free_interaction.h...