Friday is the last day to sign up for the Postcard Swap. You know you want to be a part of this history-making, first Swap-bot swap – so sign up already!!! Swap partners will be assigned as soon as sign-up closes (about midnight). Your postcards don’t have to be mailed until October 7th. Plenty of time to come up with lots of creative postcards! Check out usps.com for mailing tips. Postcards (.23 cents postage in US) must be between 5 and 6 inches in length, and between 3-1/2 and 4-1/4 inches in height. If your postcards are bigger than that you must pay the letter rate (.37 cents in US). If your postcards are square, or really oddly shaped, or they are made of something other than paper, there may be additional postage needed. For international mailings go to the postage calculator to figure out how much postage is needed. Thanks to everyone for signing up! I think this will be a fun and successful swap.