Hi Jerry,
As Alex mentioned, we were able to reproduce the issue on our local site. I have made a small code update that appears to fix the issue on my local sites. Could you please add the following code and re-test on your pages to make sure that everything is working properly? Note, once you add the code and re-enable the JFBConnect setting in your backend, please clear your cache.
For Joomla 1.7, in plugins/content/jfbccontent/jfbccontent.php around line 644, change this snippet:
(For Joomla 1.5 - plugins/content/jfbccontent.php line 657)
$articleText = strip_tags($articleText);
$articleText = str_replace('{K2Splitter}', '', $articleText);
to
$articleText = strip_tags($articleText);
$articleText = preg_replace( '/\s+/', ' ', $articleText ); // Add this line
$articleText = str_replace('{K2Splitter}', '', $articleText);
Essentially, the bug appeared to be that newlines/carriage returns in the article text were not properly being stripped, which caused JFBConnect to have problems inserting the proper Open Graph tags.
Let us know if this update works for you. It's already checked in and will be included in the next release, assuming there are no further problems.
Thanks
-Melissa