I am creating a blog with pre-registered users for posting.
Am looking for a plug-in / tweak which will allow visitors to leave comments using their Twitter / Facebook / Google IDs instead of writing their name & e-mail address etc every time they write a comment.
I have read about a plug-in that does this but it requires me to change my settings to "Anyone can register" which allows people to register / subscribe on a site. I am not looking for that.
I would only like, users to use their social network details to authenticate & write comments, with no intention to save their username / passwords.
Is it possible?