Sandy, thanks for reminding me. I had forgotten. Ella DOES send out Cmail reminders, but only if you join her cubit "Ella's garden".
http://cubits.org/ellasgarden/
Both the "Seed Trading" and "Cottage Gardening" forums are part of the Cubit "Ella's garden". I think the ongoing Chat threads are in Cottage gardening, but the Piggy Swap "oink threads" themselves are in the Seed Trading forum.
Both are free to join. You might have to check Cubits occasionally to read your mail, but I get regular email notices when I have a waiting Cmail ... probably I checked a box in my profile for that to happen.
If you check out the Chat thread between Swaps, you get to know the people and who-has-what. Also they get to know you. I think many of us use that to enable our own seed-aholism. "I don't really NEED these seeds ... but I'm ordering from that site anyway and I know Toni would love some of these next November ..."
It's a great group of people, also great for asking "Hey, does anyone have XYZ or know where I can find it?" Sometimes someone sends you something, or sometimes a couple of people decide to split a packet in-between swaps.
BTW, Ella is Starlight1153, or vice-versa.