I'm in.
A question has occurred to me: What if someone posts their seeds, and no one wants them, or just a few? I've been offering seeds of Begonia grandis from my garden for years, and I plan to do so now, but since by now so many gardeners around here have them and plants from them, I'm not expecting them to be a major attraction right now.
Soooo - could we have a bit larger lag in time between when our lists are made public and when our seeds are due? Ideally, our lists would include wishes as well as haves, and there would be enough time to clean a few more seeds and/or to order a bulk pack of seeds or two in response to someone's wishes. jlhudsonseeds.net usually ships within a week, and GeoSeeds, using the phone number that you google to order their print catalog, usually ships within a week from a phoned order, as well.
Hopefully, this idea would remedy situations where someone's have list doesn't get any (or many) bites.
Just a thought - this guinea pig will be happy with however this swap turns out:)