How do I set a featured image for the homepage? I am not concerned with the outcome of having or not having a featured image within wordpress itself. I want to control the featured image when it gets used via an external link, for example facebook.
If it's only for Facebook purposes that you need it, you could add the following code to your header.php file (between
<meta property="og:image" content="http://ia.media-imdb.com/rock.jpg"/>
Of course replace the URL in
content="..." with your own image URL.
A reference for all the Facebook meta tags is here: http://developers.facebook.com/docs/opengraphprotocol/