I agree with this suggestion, but for another reason. There have been a few times when I'm writing a reply and I stop to think for a moment. Occasionally, during this pause, I will glance up and notice that I haven't voted the article up yet. Unfortunately, when I do vote the article up, everything I have written up to that point gets cleared. I have tried pressing the back button, but it tends to take me back to where I was before I started writing my comment.

I understand that this is an error on my part, but that doesn't alter how frustrating it can be.