Although I have not made any requests for seeds, I did join the DnD swap in order to learn a little for perhaps future and to also just share some seeds. I have gone through the lists just to see what items had become "0" or taken. I have to agree with both DnD and Horntoad, that it appears that there would still be plenty to go around if someone joined late, and they would be at the loss for losing out on perhaps some specialty items.