However, I noticed that when posting to face book sometimes it posts the intro text before the "read more" of the article into the post and other times it posts "Joomla! - the dynamic portal engine and content management system"
Checking between articles in Joomla shows nothing different between the "read more" or meta content, so why is MultiShare not always pulling from the text before "read more"?
Thank you for your review.
Your issue is not an issue, facebook take meta description as post. The text "Joomla! - the dynamic portal...." is the metadescription for some articles from example content from joomla instalation. I've tried to modify it and works correctly (just have to wait facebook clean its caché and add again your content).
Finally I have to say that I've created a google group to discuss about my extensions, just to not convert the reviews in an issues discussion.