Here are the links to my series of posts on Turnitin, plus a list of plagiarism resources and two others related to reasoning:

• "Turnitin and Rhetoric"
• "Turnitin and Intellectual Property"
• "Using Turnitin"
• "List of Plagiarism Resources"
• "Emotion Overrules Reason"
• "Experts Predict No Better Than Non-experts"

Related readings on Turnitin, plagiarism, and intellectual property:

• Defining and Avoiding Plagiarism: The WPA Statement on Best Practices
• CCCC-IP's Plagiarism Detection Services Bibliography
• CCCC-IP Caucus Plagiarism Detection Service Position Statement (pdf)
• "Issues Raised by Use of Turnitin Plagiarism Detection Software", Charles Lowe, Ellen Schendel, and Julie White (has a useful list of sources)
• "What Teachers Should Know About Plagiarism Software", Charles Lowe and Ellen Schendel in AFT
• Turnitin's Response to Recent Posts Discussing Pedagogy, Michael Bruton, followed by a lengthy discussion on Kairos News
• "Scaffolding Academic Integrity: Creating a Learning Context for Teaching Referencing Skills", Lisa Emerson, Malcolm Rees, and Bruce MacKay in the Journal of University Teaching & Learning Practice. (The authors report on a project using Turnitin at Massey University. The discussion section has good recommendations on instructional practices regarding plagiarism and on using Turnitin.)
• "Plagiarism Across the Curriculum: How Academic Communities Can Meet the Challenge of the Undocumented Writer", Johnathan Hall in Across the Disciplines (an in-depth approach to developing program- and institution-wide practices to preventing plagiarisim)
• "Pragmatism and Skepticism about Plagiarism Detection Software", Elizabeth Losh (a good list of resources from pragmatic and skeptical perspectives)
• On the Effective and Appropriate Uses of Turnitin, Greg Reihman
• "(Mis)Trusting Technology that Polices Integrity: A Critical Assessment of Turnitin.com" (five essays by Michael Donnelly, Rebecca Ingalls, Tracy Ann Morse, Joanna Castner, and Anne Meade Stockdell-Giesler in Inventio)
• "Trust or Trussed? Has Turnitin.com Got It All Wrapped Up?", John Royce (in Teacher Librarian Magazine)
• "Combating Plagiarism", CQ Researcher (lengthy article on plagiarism covering central issues, background, etc.)
• "The plagiarist as pokemon", Mike Edwards
• "Thoughts on Turnitin.com", a community college dean
• "More on Plagiarism Detection Services", Clancy Ratliff
• "It's, like, the Turnitin Carnival!", Clancy Ratliff
• An Expanded Comment to Clancy Ratliff, Dennis Jerz
• "Confessions of a User", Sharon Gerald
• Saving Time or Betraying Trust, an article in Inside Higher Ed that considers using a pds to save time for TAs.
• "Strategies for Teaching with Online Tools", Nick Carbone
• "Cheating: Why Students Do It and How We Can Help Them Stop", Donald McCabe, an article in American Educator based on McCabe's extensive research on cheating
• "New Study Confirms Internet Plagiarism is Prevalent", a news release on one of Donald McCabe's studies of cheating and plagiarism
• "High School Students Sue Anti-Plagiarism Site ..." (a law blog covering different legal perspectives of using Turnitin)
• "Plagiarism and Copyright" (another law blog with a good discussion on this issue)
• "Papers, Profits, and Pedagogy: Plagiarism in the Age of the Internet", Kate Mansur (American Historical Association)
• "Recent Articles Concerning Plagiarism" (a list with links to recent articles plus a lengthy bibliography)
• "One in Three Scientists Confess to Having Sinned", Meredith Wadman (in Nature), an article reporting on the prevalence of "research misconduct." About 1.5% accounts for plagiarism, but this article is useful in seeing plagiarism and cheating as a societal phenomenon rather than a student one.
• "Copyright Infringement from the Inside: Student Perspectives on Music Piracy" (not directly related to plagiarism but useful for how students see copyrighted materials on the Internet)
• David F. Martin (2005). Plagiarism and Technology: A Tool for Coping with Plagiarism. The Journal of Education for Business, 80 (3), 149-152. (a brief report the author's analysis of using pds with graduate students)
• Brian Martin (1994). Plagiarism: A misplaced emphasis. Journal of Information Ethics, 3(2), 36-47. Martin looks at how competitive plagiarism receives undue attention while institutionalized plagiarism, which he considers more egregious, receives at best passing mention.

Update:

• "Before Models Can Turn Around, Knockoffs Fly"

A debate is raging in the American fashion industry over such designs. Copying, which has always existed in fashion, has become so pervasive in the Internet era it is now the No. 1 priority of the Council of Fashion Designers of America, which is lobbying Congress to extend copyright protection to clothing.