Sharing Images on FB/Linkedin from blog post

Hi Support

Is this standard behaviour that FB can not pull an image from a post such as this?
Is there a way around this other than uploading an image which would obviously be painful.
If for e.g. I was posting to 50 FB groups!
Have I missed something?

here is the post I want to share:

http://finalbug.net/blog/entry/421-tracks-roles-in-nles-part-1-of-3

Check the screen shots for how it looks on FB = no image
Linkedin = 1 image from 3


thanks

Paul