How Useful Are Online Health Quizzes?

In How useful are online health quizzes? Consumer Reports Health.org, June 2009, I say, “My biggest objection to [quizzes] is how they can be misused.” I go on to say that “Many people who take such quizzes do not necessarily know how to put the test and results in perspective.” Of course they can be fun too, but many are dealing with serious issues in a frivolous way and are not effective screening tools.

Have you ever taken one and with what result?