Sweet, thanks! Just found it. I’ll check out the open graphs now.
Why doesn’t Shareaholic send the post image when I share articles on Facebook?
This is NOT a Shareaholic problem. Facebook does link sharing a little differently than most other services. Facebook expects the Title, Description, and Thumbnail of a shared page to be defined in the actual HTML code of a shared page. Unlike other services, Facebook does not accept the values you have set for your Shareaholic sharing widget. To change the title, description or image on Facebook, you will need to modify your theme.
Try running Facebook’s URL Debugger tool on your pages to see how Facebook is reading your site.
To change the title, description and/or image on Facebook, you will need to modify your theme’s header file according to Facebook’s Open Graph specification. With WordPress, this can be accomplished with plugins like the All in One SEO Pack plugin. Please see that plugin for details, and post in the WordPress or plugin author’s forums for more support