Wow. Really having problems sharing articles on Facebook again today.
My own, I have to copy the title, (get the generic DJ look), then the leading paragraph, sometimes the correct preview appears, more often not.
When recommending others articles (all those shared today), it just simply comes up with the generic Digital Journal thing. Have to then do the whole copy the title and paste thing (didn't work), then copy the leading paragraph and paste, often doesn't work, so just have to delete the preview and leave as is. Not as effective when people are viewing. Doesn't catch their eye quite as well as it would with a thumbnail.
Example:

screen cap
This is the best view I have managed to get for several articles shared recently. I take out the preview, because its the generic look.
image:121698:2::0
No thumbnail, no nada.
Yesterday it was also happening a lot with Google+.
Makes life difficult to share Digital Journal articles with the world.