I both house rule it and go by the normal standards. The way most items are id'd in my games are at a mage guild or magic shop or some mage that knows how to (currently working on a PrC for it). Or the players if they don't want to pay the 10% that the item costs can cast identify or legend lore or analyze dweomer if they can. Magic is sorta a big thing in my world though, where there are magic shops in the major cities and going to id an item isn't all that much of a problem. Oh, and psionics are different should be the only way to play it. =o)