I was wondering what the exp auto share or distribute meant same with the items, what do they mean o.o whats the difference between the two. thx

With exp share and item share, exp is shared among party members, and so are item drops. With Exp Distribute and Item Distribute, you only get exp or an item when you kill a monster. How is this different from just grinding by yourself? Well, when you are in a exp distribute party, you actually get BONUS exp and skill exp according to the number of players in the party. I think its 2.5% extra for each member. So if you have a full exp distribute party (4 people) you get 10% more exp and skill exp when you kill a monster. I always play with a exp distribute party (and item distribute, item share sucks).

PS: in a exp share party, you're actually allowed 8 ppl, not 4. but 4 is the max for a exp distribute party.