Unlike other games where the quests are filler quests within the world of Flyff you actually have to do real quests. In the case of a Jester the last quest you must complete is to defeat a monster sub boss like creature. It is not extremely difficult but it is in fact in the area of being classified as a real quest and not a filler. 

All in all from what I have played I give this game a 8/10 which is rare since I really hate rating games based on my own opinion. The funny thing about this is that Flyff penya has a horrible grind(or had one, I have not played it since the newest patch so I don't know if it still does) and is still a very popular game being that it still draws in people to play it.
 

The guild system is a very friendly system, and the community is a rather nice one as well. This could be the drawing factor in this game, and I honestly think that is what it is. I am still uncertain about what exactly it is about this game that makes it so extremely popular. Regardless my prediction for this game is that it will have a very long lasting life span as an MMO, and honestly even if I never play it again I hope it does. The reason being is that it is always a shame to see a good game go down the drain.