I have made commenting easier on my blog. Simply select the post you want to comment on by clicking the title of the post. Scroll to the bottom of the post and write your comment in the comment field. Select one of the profiles as your identity and post your comment. Simple!
I don’t have a defined and documented comment policy but will stay with common sense. No spam, no trolls, no hurting sentiments, etc. Anonymous comments are fine, though I personally would encourage you to at least leave your name.
You can do this on your Blogger. Select your blog from the dashboard and go to Settings. In the Comments tab, select the Comment form placement as Embedded below post.