I'm trying to output the password of a newly created user in plain text using the user_register hook as explained [in this answer](http://wordpress.stackexchange.com/a/66580/38991).  However, upon doing a var_dump of $_POST, I don't see any password output.  Can user_register actually do this?

If not, might you have any ideas on a hook that would do this for a new user?

Thanks for any insight!