- Sign into your blog
- Go to your "dashboard"
- click on the "settings" tab
- click on "comments"
- scroll down
- where it says "show word verification for comments" select "yes"
- scroll to the bottom of the page and save settings
While you're on that page you can also enter an email address so that you'll recieve an email when someone leaves a comment on your blog. Be sure to save settings when done