Block doesn't have ads. It has 10 different quilt patterns with printed tutorials of the 10 and 2 how to selections. The only thing that be remotely be advertising is the name of the fabric used to make the 10 quilts is listed and a picture of MSQC people with a message from Jenny is the first page.
I remember the Taste of Home magazine and it was full of ads, but really Block is more like a book than a magazine.