HI, all, I'd like to thank Macelo Vieta, Elizabeth Maurer, and Angela Thomas for your responses to me asking about "talk/write". Angela, email sent to you. In looking further, I found Danet's work mentioning a similar idea though not with the same terminology.

Naomi Baron deals with this in her book From Alphabet to Email and other works of hers. I address it in a 1996 article published in Research on Language and Social Interaction. Nancy