The form is far more important than the content. They don’t even really have to match. If you’re talking about an author people are a little less familiar with, you’ll want some black-and-white landscape photography or a 19th century painting, something that screams “CULTURE!” and that you don’t have to think too hard about to enjoy.
Over at the Ploughshares blog, Tim Ellison shares his disheartening experience as a social media intern for a literary magazine and trying to engage with readers.