I think that the ability to put time into each question and have a little review at the end of the question is excellent. Also that you get your answer revised almost immediately is great. Review collected by and hosted on G2.com.

That the questions don't have a timer or that there is no timer overall, it closes when the time is up with no warning whatsoever, which can be very stressful and disappointing. Review collected by and hosted on G2.com.