Turnitin Originality Checking
allows educators to check students' work for improper citation or
potential plagiarism by comparing it against continuously updated
Turnitin serves over 1 million active instructors and 20 million licensed students.
Turnitin uses three databases for content searching:
* 20+ billion web pages crawled
* 220+ million archived student pages
* 120 + million articles from 90,000+ journals, periodicals & books