Your wishlist is a list of items that you can add to and edit, the list can show items you do not have but want, items you like to hoard, or any items you wish for. The list can be organised by different categories and when items are obtained can be deleted by checking the box underneath the item or selecting the "remove from wishlist" option in the item's menu. Users wishlists can often be found on their user profile.
When searching items you can see that they are on your wishlist from a border around the items image, you can add items to your wishlist quickly by clicking on the plus sign in the corner of an item that is not already on your list. It is possible to double add items if you add them through the text bar on the wishlist page.