After students at Texas Christian University are suspended for allegedly using the Quizlet app to cheat on their exams, professors are warned this case may be the tip of the iceberg. Many students graduated last week, and on Twitter, many thanked the free app Quizlet for getting them. Quizlet is a free app that makes money from advertising and paid subscriptions for additional features for making flash cards and online quizzes, which can be used privately or shared publicly. But some students are also using the tool to upload questions from real exams, and other students are finding. Other students openly tweeted about using Quizlet to cheat — either opening Quizlet in another browser while taking an online test, or studying questions on Quizlet in advance that they knew were likely to be on their test. At Texas Christian University last week, news broke that 12 students were suspended after allegedly using Quizlet to cheat on a final. CBS News reported that their professor said t...