As soon as one of my cards is registered as received, I'm allowed to send another one. So I sent more than my original five before I started receiving any myself.
My sixth card went to Sofia in Turku in Finland. The berry card again ... but she did say on her profile that she likes nature. :-)
I sent the card on October 7th; it travelled 640 kilometers to arrive in Turku after five days, on October 12th.