The issue is that there's no Open Graph image set for that page, so Facebook is 'guessing' which image to use. The best things to do are:
* In the Open Graph -> Configuration area of JFBConnect, set a "Default" image to use (like a logo) on all pages where one isn't being set, like:
image=http://yoursite.com/link-to-logo.jpg
* On the home page, in the article contents, add a specific Open Graph image tag to use, like:
{SCOpenGraph image=http://yoursite.com/better-image.jpg* Enable an Open Graph plugin that may automatically set an image on that page (if one can be detected and there's an Open Graph plugin for the component generating that page).
Once you think you have it setup, re-run your page through the Open Graph debug tool to make sure Facebook detects the change properly:
developers.facebook.com/tools/debug/og/o...kepplewray.org.uk%2F
I hope that helps!
Alex