Here's where I'm getting lost. If there is just one big list of available seeds and one list of wants, how does that help individual trades? I don't know who is offering what and who wants what.
Also, how can I add a plant I've never heard of to my wish list? Part of the fun of swaps is discovering a new plant that you'd like to try. If people only offer me things based on what I have on my want list I'll potentially be missing out on new plants, introductions, etcetera just because I never knew they existed.