Everyone has their own preference, I’d love a seed swap, have gone to a few, organized one the year before the (Cough Cough) came, and hope to have a 2nd annual one in my current area in Fed.
I prefer in-person swaps, getting to meet people, seeing faces, talking, and hopefully making new friends and allies.
In the community garden I ran for 3 years, (with minimal participation) and in my efforts to evangelize gardening, I tried to really harp on the fact, that growing is only one step, it must be harvested and either stored (preserved) or in any account prepared and plated.
All the seeds and plants and animals mean little, if people don’t know how to prepare it to eat.