I have added a comment feature to my journal as well. If you just want to leave a quick note, message, question, whatever, just click on the "Comment" button under each post. A window will pop up with four fields:

1. Name
   
2. E-mail
   
3. URL for your web site
   
4. Comments

You can fill in all of the fields; just the comments; or any combination of them. I would imagine that most people will just fill in the name field and type in their comments. The comments should be much quicker than sending an e-mail, which should hopefully encourage more reaction and interaction on the site.

Enjoy!