Lobby quiz fun?

Well then, you may be wondering how we can put "fun" and "quiz" toghether in the same line but I had an idea. What if every 30 minutes or so ( this can be changed) there will be a question like: What year was the first Mario game came out? To awnser it, you press a button like F9 to enter quiz chat to give to a server or such. Anyone who got it right will get around 100GP or 50GP something like that. The only problem I can find with this is that this may cause lag or server overdose or people waiting 30 minutes just to get GP xD