Post Office Bar Codes

So it has been brought to my attention that the wonderful Post Office not only scratched out my Stamps, but they also put a mailing bar code over the bottom of the Save Our Date post cards which covered the part which said: "For details about the itinerary of our unique Wedding Weekend Getaway in Galena, visit  http://visualdeyanaweddingplans.blogspot.com/" So annoying; now many do not know to come here - sniffle sniffle! Guess I should have Goggled how to make a post card because it shows that they will print a bar code at the bottom and since a portion of my post cards were black, the had to print them out on stickers and place them over the bottom so that it could be scanned - opps!