I have a content plugin named "JO Social Content Locker" which was working with EasyBlog before I updated.
It no longer works on EasyBlog, but still works on regular joomla articles.
This joomla article shows it working at the top of the page:
http://www.johnnyjoomla.com/available-features/available-features
This is just to give an example of where it is working, to see why it might not work on EasyBlog.
Thanks ahead of time!