When using this plugin and selecting:
Modify Contact Link: Yes
then the link to the author goes to their EasySocial profile. However, if you are using an author alias (Created by Alias in Joomla article > Publishing options), it will still link to the user who created the article. In my opinion, if an author alias is used (who doesn't have a a Joomla profile in most cases) then the author name should not link anywhere. Otherwise, it's very confusing.
Jordan