I agree with the random group idea. That way there are no favorites. We could collect all the names first - and then based on the number of participants - decide on how many groups there should be. The important thing is that you promise to send a card to everyone in your group so that no one feels left out.

From the sounds of things there are a lot of people on limited budgets and this could actually increase the number of participants. Also, I know I also felt somewhat overwhelmed last year trying to get the last of my cards sent out - some didn't make it out until after Christmas.

Also, for those on limited budgets - postcards could be a very acceptable solution. They are inexpensive and the postage is alot less.