What I think happens: I know a lot of the stuff I offered said added, then removed in the recent events. Sometimes when clicking on the button to add the item to the swap it's slow to turn green, so I click it again which effectively removes it (!) and I end up having to 'add' it again. If you see your stars next to an item that says it's removed, it really is still available. If an item is actually removed the stars would disappear from recent events and from your wish list.
