Thanks for you compliments on JFBConnect. We work hard to make it more awesome every day
As to your question, the answer is that it should redirect back to where the user originally came from. If it's not, it likely means that something (like an SEO extension) is rewriting URLs in a way that's causing problems.
The best way to check what's going on is to:
* Be logged out
* Go to the article you want to read
* Click the Read More link
* You should be brought to your standard Joomla Login page.
** In the URL, there should be an extra query string variable like &return=alkjsldkjflkjgobbledy-gookJJK
JFBConnect will detect that &return variable on login and should redirect the user back to what jumbled up code translates into.
Can you check if the return variable is being set on the URL? Either way, some options to test with are:
* Disable SEF URLs (either in Joomla's Global Config and in any 3rd party SEF extensions you have)
* Set the "Returning User Login" and "New User Redirection" settings to "Same Page" to see if that helps
Let us know how any of the above explorations or tests help and we'll do what we can to get you going.
Thanks,
Alex