Listen to an interview with Thomas Bartlett author of a recent story in the Chronicle of Higher Ed on essay mills:
To read the March 20th article go to: http://chronicle.com/free/v55/i28/28a00102.htm
"The company...sells so-called custom essays, meaning that its employees will write a paper to a student's specifications for a per-page fee. These papers, unlike those plucked from online databases, are invisible to plagiarism-detection software."
From many students' experiences it seems the service did not live up to their expectations--do you think it is worth explicitly talking about services such as this to writing students? I wonder how they do the research--I wonder if the bibliography would be a give away with many questionable sources...