I like how it keeps track of my answers, which is very useful for me when writing articles or posts because i can always go back to previous ones if need be! Its not really anything that annoys about qaPop but its more just general things- their mobile app could use some work as well since sometimes there are glitches with responsiveness/speed issues (esp in android).
It helps keep tabs at hand while doing other stuff so you dont have any lag during times where multitasking might occur; also makes note taking easy by saving all ideas from brainstorming sessions into one place without having them scattered around everywhere else.- save time.