My friend at The Tarr Pit tried out this new comment widget called IntenseDebate. It lets you reply to comments as well as notify the people you replied to. I am going to give it a whirl. Its taking me a looong time getting back with people (I try really hard to reply to ALL comments), so I thought after seeing her that it looked like a great idea. Let me know what you think. Do you use this on your blog? What is your favorite add-on that you use on your blog?