The integration with EasyBlog is in our JFBConnect extension. The support we have is for Open Graph tags and Actions. Using our Open Graph integration, you can more easily set the tags that are used in each post, which are used by Facebook to 'describe' your pages when used in a news feed. Things like title, description and image can be configured from the Open Graph area of JFBConnect. Simply enabling the Open Graph - EasyBlog plugin will automatically set some tags up as well.
Open Graph Actions let you post to a user's wall automatically when they take an 'action' on your site, like voting for or commenting on an EasyBlog post.
There is currently no login integration for importing a user's profile, or something similar, into EasyBlog. Our registration/login process does work just fine with EasyBlog though, so any users that login with a social network can use EasyBlog features just like a normal Joomla user.
I hope that helps explain,
Alex