Has anyone used this service? I was playing with the web tool and I can target specific area's with the carrier routes. I estimate that I would have less than 5% waste within my 1500 piece mailing versus using a mailing list. Even if it was 10% waste there would still be a substantial savings over regular postage. My question was does anyone know if they will accept a 5.5"x8.5" postcard? I have a design for one laid out already but I want to make sure because the guidelines are kinda unclear. If you used this program, what size did you mail? I don't really want to use anything larger as I feel more people would throw it out without reading. I am going to try to stop by the post office tomorrow but I was just seeing if anybody else had any info.