to pikko , I went to mcdonalds and got a burger then the guy behind the counter told me how he toasted the bread , cooked the pattie , put some cheese on it some pickels some onions some lettuce and ketchup on it , bragging about what he did . I told him that's what you get payed for to do your job and not brag about it like it was great . So ill tell you the same thing when you brag about putting the icon up and all the stuff your supposed to do because that's your job!
Well, for one, it is used in the quest "Reap what you sow."
The young tarutaru asks you to bring him a sobbing fungus or better. A deathball is something better than a sobbing fungus. Nets you 700 gil, and I think the quest is repeatable.