Your “This is a link to a post” description is rather confusing. It made me think I could write page name here.
Just stick with an example instead: The About page. Your screenshot page explains it pretty well of course.
Also, does this plugin even work with posts? I’ve been very successful with pages (even custom ones) but no such luck with posts.
All in all a great plugin though! It might be of interest to the WordPress Wiki developer.