Responsibility in the classroom is often placed primarily on the teacher (how well that teacher teaches is reflected in how well the students perform), but in Yancey's classroom, students are to be responsible for their writing. Teachers, then, are left to concentrate on their responsibility with regard to last point, patience.
Purpose in the classroom becomes a fairly large question, which is gathered through a few assessing questions: what, as educators, is our intention? Is it to help our students to create a body of work that they can coalesce into a portfolio (and Yancey is a proponent of ePortfolios for students)? Is it to help our students to write so that an audience will be able to understand their points? Is it to "create writing publics" (i.e. blogs)? The answer to these questions, and many others, will greatly influence how we teach. Yancey argues that our students are already writing vigorously, through blogs and emails, and they will do it with or without us. With us they can write more purposefully, and more effectively.
Patience, the last point, falls mostly to us as instructors. We must recognize that students come to us from various writing backgrounds and will have varied capabilities. It is up to us to be open-minded and flexible enough to teach all of these students and not cling to old methods. We also have to realize that our students might have ideas that differ from ours, and we should not gage their effectiveness in writing by our own beliefs and prejudices.
The most interesting concept in the presentation was the ePortfolio. I found myself wishing that we'd had such a thing when I was an undergrad.