well. i also curious about this thing.
coz im rldy boosted my char from the facebook user ( i dont know it the same guy or not )
2 character ( lv24 clerics ) to 50 in one day. not even 24 hours he done it. got nothing in the inventory ( not like other booster that i known, whnever they go in a dungeon there are posibilities you character gain lot ) so it means there something wrong ?
both of the character in the same situation when lv 24. both of the inventory is the same as when i left it at lvl 24, no equipment changed or anything. it just fresh lv 50 char in one day.
i think he is using quest board hack ? coz exp hack is hardly impossible.