1) Penning ads and such 
Copywriting is writing copy for the purpose of advertising or marketing. The copy is meant to persuade someone to buy a product, or influence their beliefs. Copywriters are used to help create direct mail pieces, taglines, jingle lyrics, web page content (although if the purpose is not ultimately promotional, its author might prefer to be called a...
Creating the text for an advertisement.
Writing the text for advertisements.
Creative process by which written content is prepared for advertisements or marketing material
writing the verbal (written or spoken) elements of an advertisement.
Creative writing for advertisements or other marketing material.