I was sorting through my WL when I accidentally clicked the "Delete" button on a category that had, like, 55 items, and it's gone. Poof. Now they're sorted with the "Unsorted" items. This will take me a while. So, title says it all I guess. Please? heads back to sorting items
I did something similar with multiple categories and ended up with an "Unsorted" with thousands of items that repeatedly froze my browser. I thought deleting the category would delete the items as well and this was before they added the item limit. It took a lot of patience to clear my wishlist.
So, yeah. A warning and/or conformation would be nice. I had to learn the hard way.