Turnitin is a tool integrated with Blackboard that checks submitted papers against billions of web pages and student papers to detect plagiarism through OriginalityCheck. It allows for online grading and feedback through GradeMark where comments can be directly added to papers. PeerMark also enables students to provide anonymous peer feedback. Key benefits for students are easy submission, receipt confirmation, and referencing checks. Lecturers save time with paperless grading and preset comments, while unoriginal content is flagged. However, it requires internet access and only accepts certain file types.