Extra exp from potions
Not sure if this has been posted, but, if you pause the game quickly right after using a potion, you can go into items->potions and the game will not have registered you using it, so you can use it a second time(up to 3 times if you are quick enough). This is very helpful when using 4 star and 5 star xp potions. You can get 25,000-37,500 xp from one 4 star potion(usually 12,500) and 125,000-187,500 xp from one 5 star potion(usually 62,500). This actually works unlike all these "unlimited xp" glitches.
Added by: JoshYo Feb 18th 2010, ID#5497