On a blog where you cannot comment unless logged in, it can be annoying for users to go to the comments page and scroll to the bottom, only to be told they have to go to another page log in and then come back to leave their comment.
I was thinking it would be much simpler to have the login form integrated into the comment form.
In other words, if someone is not logged in, simply show a “password” field in the form below “name”, and let the comment “submit” button log them in and post their comment.
For an example of a system like this, see the commenting form at FARK.com
