"Click here to be notified of followup answers.." turned ON by default

Hello Ash, or other WPMU tech wiz,

My question is is there a way to have this notification at the bottom of single-question-answer text field "Click here to be notified of followup answers via e-mail" turned ON by default and have the "Stop notifying me of followup answers via e-mail" appear instead until a user decides to opt-out of reply notifications?

Thank you in advance! You all have been extremely helpful so far!