This has been bugging me. I created a quiz for a comic and it got 4 plays. I am a regular at the messageboard of said comic and I thought to link my quiz. Still only 4 people have played when it should have been more.

Is the reason for this that the people are in the dark about Funtrivia and their play doesn't count due to not being a registered member?

I'm pretty sure that this is true. You need to be registered for anything that you do to count on this site. At least you know that someone is playing and enjoying your quiz. I have one quiz which is a year old, and has still only been played 4 times!