Very simple, you reply to the question asked by the previous poster, Then you ask a question for the next poster to answer....
Questions can be about anything conceivable (gaming, culture , sport , life style , politics , …….you name it ) though try to avoid trolling as much as possible otherwise the Mods will lock this thread up for good .
Note : do not use the Quote Button just post in this pattern
A) you answer the question asked from the person above
Q ) you ask a question for the next poster