These sites have a fee or charge for service. They indicate their service is a deterent to student plagiarism. The process in each case requires students to submit their own work to the online website. The work is then compared to the company's own database of documents for similarities. A report on each student's work is e-mailed to the instructor, identifying what is plaigiarized.
Any work submitted to the service is kept as part of the master database for future comparisons.
Compiled by Jane Sharka.