Have maker badges worked (or not) for anyone else reading that's tried it? Similar, but floating newsletter sign-up buttons/widgets in the corner of pages have

Have maker badges worked (or not) for anyone else reading that's tried it? Similar, but floating newsletter sign-up buttons/widgets in the corner of pages have worked for me (they don't have to be in-your-face pop-ups!), making a big difference compared to a sign-up form inlined into the middle or end of posts.