Blog quizzes refer to a specific genre of quizzes which are conducted by the quizzers on blogs. Blog quizzes may be about verbs or a wide range of other topics.
Many online quizzes are set up to actually test knowledge or identify a person's attributes. Some companies use online quizzes as an efficient way of testing a potential hire's knowledge without that candidate needing to travel. Online dating services often use personality quizzes to find a match between similar members.