JFBConnect isn't designed to do what you're looking for and it's not something we support. We use the Joomla event system for a reason.. it's a standard way of notifying other extensions (like JFBConnect) when something has happened (a new article is created). We wouldn't add polling for new articles as that's a tedious, processing-hungry task that's error-prone.
Instead, I'd recommend contacting the developer of the other extension that's automatically creating content and ask them to update their code to properly call the event triggers in Joomla so that all extensions (not just JFBConnect) can react appropriately to the new content.
I hope that helps explain,
Alex
Auto-post for articles created outside UI?
