Pieter,
Again, I don't know Joomblog, so the below may not be 100% accurate, but I think it should get you there. To setup the read action for blog posts in an extension we don't support, you'd mainly want to follow all the instructions in our
Open Graph for Joomla
configuration guide.
The only difference would be in the steps for setting up the Object within JFBConnect. Instead of creating an "Article" object, you'll want to install and enable the Open Graph - Custom plugin. Create a new "Custom Object Type". For the "Type" on the left side, it'd be "news.reads", just like the configuration guide. The "URL Query Parameters" is what you'd need to set so that the Object is properly set for your blog view pages.
Here's where I get a little inaccurate... disable SEF URLs (if enabled) and go to one of your blog posts. The URL will look something like the below (I'm guessing here):
index.php?option=com_joomblog&view=post&id=12
The id will change for each post, so we'll disregard that. The option=com_joomblog and view=post is what we want to apply our Object Type to anytime those types of URLs are loaded.. so, in the "URL Query Parameters", you'd want to put:
option=com_joomblog
view=post
Again, you'll need to update that based on the actual URL for your posts.
After that, setup your actions just like the configuration guide shows.
Hope that helps, but let me know if you have any questions!
Alex