I’m in! PM is forthcoming.
:: steeples fingers ::
Excellent.
Oooh! ME! I want to play too! ME! Pick me! 
PM sent.
Hurrah! I’m in! PM sent.
Thanks. As noted in the OP, cut-off for signing up is noon EST tomorrow.
Are you stroking a long-haired white cat?
Of course not. My fingers are steepled.
An hour to go, and we have room for three more folks. At least one more non-U.S. Doper would be nice, so that each group could send an international postcard.
Ahhhhhhhhhhhhhhh! I’m in, barely scraping by the deadline. I am not non US though. Sorry. 
No worries. Two to go.
I am in!
Great! And who will be the last…?
romansperson just PM’d me, so that’s that. PMs to all participants should go out shortly. Many thanks!
Woot! I got my names!
Got my names, got my cards, got my stamps (I think).
I love how noon EST is early morning here in California (where we are on Daylight Saving time…). I was able to run to the Post Office before work and pick up my international stamps! Wheee!
I had a late applicant via PM. If I get three more ASAP, I’ll match 'em up in another grouping.
If not, I’m up to dispatch another carte postale.
Like silenus, I can send an additional card. My three cards have been posted this morning.
Thanks. I just heard from another Doper, so I think I’ll be able to put together another set soon.
I can also post an extra card if needed. The rest of mine are in the mail.