With This Comment Feature You Can Add An Url To A Post And Comment
First important thing is to add the url to the post. And click ADD!
TIP: use the mobile url of for example a fanpage and click on a post,
you will see the url to the post (http://facebook.com/myfanpage -> http://m.facebook.com/myfanpage)
Add the url in the form and click ADD. Add your comment you want to post. Select the delay between each comment. Click on START